Not sure if you are intending to take a kid / beginner but I don't think you will find much proper sport in these waters. The one on the north side of Fort William looks like a rather manky stew pond and is geared towards tourists.
Even for youngsters there can be some great sport with wee brownies on the hill lochs. Fort Willaim is striking distance for the hill lochs in Morar and Ardnamurchan or even Loch Ba.
Not wanting to be a fishing snob, just managing your expectations.....though looking for rainbows in the highlands is a bit like taking mixers to a whisky tasting
