Re: Getting it off the trailer....
Putting them on the blocks from northern is the way to go. In my area they are about 12 by 12 by 24, but they are still free. We have two boats on them right now, and at one point or another, they were all on there. If you can, shove the boat back a few feet, put a block under, and start rolling forward, putting blocks under as you go. Use the winch, and back it off as you go, or otherwise, the boat will roll off the back, and knock your blocks down.