Close enough
The route was actually canal with locks from Laxford to Stack, canal again to More, third canal section with locks to Merkland, again to Grahama, short canal (probably a single lock actually) to Shin, then big canal section with locks through to Oykel which would be deepened to allow passafe through to Bonar Bridge and Kyle of Sutherland beyond. Thankfully they never went for it, however hammered the area with a massive hydro system a good few years later.
It's also reckoned that vikings used this route as well, however they would have to carry thier boats (small traders, not longboats) over the land sections. Overscaig is reputed to be a name of viking origin meaning moustacheoed (sp?) hound (well why not we've a bearded collie
) although i did hear this late at night in the bar after a few apris fish lemonades.
Right Jim, your turn.