It sounds like you want TO CREW, lucian.
Best way to do that is wait a few more weeks for season to begin, then find out where the local
beer can races are and start asking around at the docks, at the yacht clubs, about an hour or so before the races start.
Someone always needs crew, if you are there on time and dressed for it, you'll get rides, and some of them will ask you to come back for non-racing as well.