Dans on vacation now, he should have figured who did the trailer frame offset. The standard trailer has little to no clearance between the frame & prop which is normally not a problem if the boat is far enough up on the trailer. But if the boat is left back a little the spinning prop can strike the frame, that trailer had many scars in the 3" channel crossmember & when I rebuilt the trailer I sectioned the frame to assure that this could not happen. Other mods: side guides, and v-stop notch added in the steel frame to ease the bow eye through.