Alasdair boasted a wonderful range of passing moves, but he also proved he could compete in the air and in the tackle and he had an uncanny ability to create himself a yard of space in the 100mph frenzy of Lewis football.
His island football career began in 1969 when the teenager played a handful of games as 'twelfth man' for his home team of Point. The following season Alasdair became a more regular fixture in the side and he earned a league winners medal and an Eilean an Fhraoich Cup winners medal in what were only the first of dozens of precious football honours.
Alasdair revealed: "When I began playing for Point we used to play all our home games at Goathill. As I didn't drive at the time I would get a lift up off Iain Crichton and I remember we had some real stormy games up there.
"When we did get our own pitch in Garrabost up to standard I remember it really was a tremendous community effort. I can still remember people going along and lifting the stones.
"In one of my first ever games for the Senior Point team we were playing against Back and I remember I was up against Kenny 'Sgiathanach' Macdonald.
He was a big man, built like a wall but he was coming to the end of his playing days and I was confident I could get the better of this 'bodoch'.
"I knocked the ball through his legs and he just stopped and I hit him. I really thought I was going to die there on the pitch.
"I became a regular in the team in about 1971 and it was terrific to be playing alongside guys like Donaulay, John Graham, Willie Jefferson, Iain Crichton and Stevie Martin.
"The great Aths team were coming to an end around then but Lochs were strong at this time. However, we always had memorable tussles with them in those days and they were normally the team to beat.
"One of the things I remember most of all about our games was the amount of support we had. We always had bus loads of fans coming to Goathill with us and the bus from Point would always stop at the old 'Neptune', now known as McNeils, to pick up some more."
Like so many youngsters on Lewis, Alasdair was forced to leave the island to further his education but just a few short weeks after arriving in Glasgow, he was suspiciously surprised to receive the offer of a trial from a professional club.
"I went to Glasgow in 1973 where I played in the Glasgow Amateur league.
"That was a very tough league. I used to stay at a guesthouse on Sauchiehall Street along with another bunch of lads from the island.
"Shortly after arriving I got this call from a man claiming to be a scout for Partick Thistle inviting me for a trial the following Sunday at Firhill.
I didn't believe the guy and thought 'yeah, whatever.'
"Anyway Sunday arrived and I got up early, threw my boots into a bag and sneaked out of the house. I half-expected to see one of the boys heads peeking out watching me leave but they didn't. Coming from Lewis I had never played football on a Sunday so I was also terrified in case of some sort of divine retribution as well.
"When I reached Firhill there was a trial going on but there were something like 200 people there. I played but didn't get asked back but it is good to be able to say I played on Firhill."
Although his dreams of professional football ended at the first hurdle, Alasdair was the subject of young Hearach autograph hunters who were star-struck at the sight of one of 'England's biggest stars'.
"When I started playing I had long hair down to my shoulders. Our strips at that time were also very close to those of Arsenal. We were playing in Harris this one night when two kids chased after me at half-time asking for my autograph.
"I asked them why they wanted that and one of them said 'aren't you Charlie George?'
"Charlie George was a big Arsenal midfielder of the time with shoulder length hair and they were convinced I was him.
"I was a hard working midfielder. I was very fit in those days and enjoyed covering box to box. I didn't score too many goals but I did manage to create a few.
"I was often deployed as a man marker and this was a role I fulfilled regularly. Our manager Iain Crichton liked to have me man mark the opposition danger man. Quite often when we played Ness I would be told to mark Iain 'Todd'.
"My favourite memories of football come from 1981 when we had a phenomenal season. That really was the icing on the cake, as we won four trophies and only missed out on the Eilean an Fhraoich Cup, which my team mate Charlton won with Tolsta.
"Another memorable game was in the Eilean an Fhraoich Cup against Ness. We fielded a very under strength side in the first-leg and lost 5 – 0. The second-leg was on a Saturday and I remember I wasn't looking forward to it as I was knackered after being in the peats all day.
"We boosted our ranks by drafting in Alexander Mackay and Norman John was available but at half-time we had only pulled back two goals and were still trailing 5 – 2 on aggregate.
"At half-time Iain Crichton, who was a tremendous motivator, gave us a great team talk and we had a sensational second-half. Almost everything we were hitting was flying in and we scored seven more to win 9 – 0 on the night and 9 – 5 on aggregate.
"Ness were very strong in 1981, as were Back. I remember early on in the season we met Back in the semi-finals of the ABC Cup, which is the first cup of the season.
"We met them in early April on a very windy night. Back had the wind behind them in the first-half and we were really on the ropes. We were 3 – 0 down at half-time and Robert Mackay got injured.
"We were really up against it. We were still 3 – 0 down with a half hour to go but we managed to score four times to win 4 – 3. We then beat Ness in the final 1 – 0 with a goal from 'Walrus'."
The Point side of 1981 have often been described as the greatest side in the history of the club and it is remarkable to note that they won the league without dropping a point, winning 18 straight league games in the process.
The Reds only conceeded eight league goals throughout their epic season and the Acres Cup, the Jock Stein Cup and the Lewis Cup joined the league title on the Garrabost trophy sideboard before the year was out.
Alasdair continued: "The best team I ever played against in Lewis football would be the Ness team of the early 80s. They were well drilled, very fit, and confident and they also brought with them a tremendous support.
"There were dozens of great players who I played against but one guy I always had to keep an eye on was Angus 'Beattie' Morrison of Lochs. He was a very tough guy but dangerous if you lost track of him.
"Early on, I played against Kenny Macsween of Lochs who had fantastic skill.
Another top guy was Wee Willie Macdonald but maybe the best centre-forward I played against was 'Rasper' Macdonald from Ness. However, I believe that our own Norman John was his equal as a player and a brilliant forward for Point.
"As a leader the top man was Robert Mackay. I would put him in the Colin Hendry mould of player. He was a great motivator and a great player."
As Alasdair's Lewis football career wound to its conclusion, the trophies continued to come for the skilful midfielder. His final three seasons – 1983, 84 and 85 – saw him on the winning team in the Eilean an Fhraoich Cup final.
He continued: "Throughout my time with Point we had a fantastic support with a lot of characters like Willie Jefferson, Molly, Murdo 'Biodan', Tormod Thompsh and our mascot was Murdo 'Sgurdan' Macmillan.
"I don't watch too many games now but if Point are in the cup final then I always go along. The current Lochs team are very good but it is a shame that no local talent has made it professionally. Kenny 'Killer' from Point went to Dundee United for a year. He was very skilful and I thought he might have had a chance but it didn't work out for him.
"The wins for our sides in the Highland Amateur Cup prove that our players have the desire and skill to match the mainland so it is disappointing that so few ever make it."