Bill
The 25 is pretty forgiving with placement if the keel is laying flat.I bought my boat in St.Louis and trailered it to Pittsburgh last fall. The boat was originally from Mass.It has alot of mile on it and yet the boat has never been fitted to the trailer.My trailer currently has bunks. the only part of the bunk that touches the boat is from the stern to about 4 ' from the stern. Not a good set up but it has put alot of miles on.The trailer was an old stinkpot trailer. They u-bolted "c" channel to the frame in only two places on each side. Then connected a 2x4 bunk with carpet in between.Yes, I am going to change it before haul-out.I am going to use square tube steel to make my vertical adjustable pads. I will use about a 2 1/2" square tube in three places on each side. These will be about 12" long and welded to the frame. They will have two holes drilled in each tube and a nut welded to the tube. A bolt will be treaded into the nut as a locking device for the tube that slides inside. I will take the next size square tube that will fit into the first tube and cut it about 3' ( not sure of the dimension so I may have to recut it) long to start.On the top I will use two 2 1/2" angles about 4 " long with a 1/2" bolt. The bolt will go through one, then the small square tube, then the other angle. That will give a pivot effect for the 12" x 12" pad that will bolt to that. The pad will be two layers of 3/4" pressure treated plywood epoxied together to make it 1 1/2" thick.This should give me 6 individual points to adjust for even pressure on the hull. The plus is that the small tube will go down through the large tube so that I can use a jack to adjust pressure on the hull. The other plus is that I can paint the bottom and then lower each pad to paint that area and still have two pads holding the boat.Ok, I just reread this and if it is confusing, Tough.Know really let me know and I will try some sketches and maybe some pictures.r.w. landau