I've just found a forum devoted to this. It's quite new and a bit sparsely populated at the moment, but if we guide everyone interested towards it, it could be a brilliant resource: http://www.freewebs.com/summerholidayconversion/ I'm there, as Sammy, already.
Those are both US based though, and mine is UK. A lot of laws are different, as are the availability of parts. However, those are both cool sites too.