Watt scored on his senior debut aged 17 and continued to play professional football on a part time basis for 10 years while forging a business career in property.
After retiring as a player, Watt returned to senior football in 2003, along with assistant manager Stuart Millar, enjoyed immediate success rebuilding a relegated Stranraer team and leading them to the 2003–04 Scottish Third Division championship.
Watt had discussions with various full-time clubs, most notably Dundee but he turned down several opportunities due to his other business interest.
[4] At the time Clyde had severe financial problems, famously referred to by Sir Alex Ferguson as a "basket case".
He has owned various racehorses in partnership with long-time friend David Moyes, current manager of West Ham Utd.