Our boat has been hauled and launched annually for years (Greats Lakes) using a typical travel lift with two wide slings under the keel. The yard recently acquired a hydraulic trailer with pads that lift the boat around the chine area. The trailer is rated for the weight of the boat, but I wonder about the advisability of lifting a 35,000 pound boat by these eight roughly 18" square pads pushing against the bottom. I suppose there is some structural stiffness afforded by the chines....although they only extend about 2/3 of the way forward from the stern, so the forward pads aren't lifting very much. Thoughts??