For the most part the crowd at OSH is rather trustworthy, if course you have to use common sense when your traveling or putting down deposits for quarters. I think once you are in the OSH area you should be able to sniff around for a ride if you need one. Take a look at all the seminars offered on the EAA site, many of varied interest on any given day. I'd check the ones that interest you & print off a copy & have that list to work off. You may or may not get to all of them, but it is some good filler from looking around at all the stuff.