Transporting Raft from Campsite to Launch Ramp?

Back when I was young and strong I used to take people on whitewater raft trips. I had a 12' bucket boat and a 16' self-bailer that I transported on a trailer. I got the boats to the water by giving out a shout. In no time I would have all the hands I needed. Everyone helped each other at the launch sites. 175 lbs. should be no problem even for a long carry.