While the Libby ramp is probably your best bet, I'll add an option in that you could launch in Wolfeboro at the town ramp and park the boat at the town docks while hubby drives the car and trailer back to the house. He returns w/o the trailer and then drives the boat back, you take the car. You can check out Wolfeboro while waiting. Given it's going to be
very busy this weekend I would recommend you do this Friday if possible. Though not long, this may be more of a boat trip than you care to bite off on day #1. If you can drop and leave the trailer (APS mentioned there's some room for trailers) @ the Libby ramp and then return for it later then this might be the ticket