I once watched a guy do this and after having great fun with his stupidity, I was the one that had to bow down to his brilliance when I watched him pull the boat up to his back yard, get out and walk up to his boat house, grab the winch cable, hook it up to the trailer and winch the boat up into his boat house. That's also when we saw that there was no space on either side of his house to bring the trailer in from the road. Brilliant!