kenny
can i suggest a route i did last year with glasgow tri club which can be done in time to get the 4.30pm with a short lunch break at blackwaterfoot. You take the String road to Blackwaterfoot then do the south of the island back to brodick stop at cafe opposite brewery for refuel then do north of island and swing on to road just before blackwaterfoot that takes you back onto String road to brodick. String road is a tough finish but good training. if enough interest could have 2 routes.Not meaning to hijack your post.Only flagging up as an idea
cheers
charlie