There's been quite a lot of discussion on the pros and cons of Safeboatskin. Some swear by it, others are to be convinced. However, one benefit seems to be the minimal preparation (and hull wrecking) for regular antifoul.
Try doing a search on here for safeboatskin (all one word) and see for yourself!
Re tube covers, don't know. For console covers there are some people that advertise on www.boatsandoutboards.co.uk
I think some sailmakers will do that sort of thing as well. You might still be better off with an all-over cover although obviously it can be a real pain depending on your mooring circumstances.
PS Did one of your radio courses last year - Laura's lot.