This is what you do, launch the boat, and have with you (2) 4x4x8 woods, with cordless, cut slight angle length ways, but still have 4in clearance, and mount those darn things. That will giv-yah the clearance for now...get'n the water.....just put new runners=bunks(dont laugh Louis) on trailer other day, used sawsall to cut rusted bolts, then already had bunks made, everybody, look'n at my, scratch'n there heads, but f-them, my trailer fixed....