RickK, I am going to do a drop by a few building sites and grab some cinder blocks on the way home and jack her right up. Sarasota, one of the few places in the U.S I have been and I must say I loved it! Wished I had brought a rod!
This is the "pad" that Fitz is talking about.Look at the center of the hull (drain plug) and go out about a foot on either side and you see an edge - a reverse strake that runs forward.Here is another transom - it's easier to see the strakes on this one
I have a 2x4 that I have been using for years that is just shy of the height of the bottom of the tongue of the trailer when the jack is all the way up. I crank the trailer up, put the 2x4 under the tongue and lower the trailer onto it and continue to crank the jack wheel up until I can get a cinder block under it, slide the cinder block under and start cranking the trailer up again. You can repeat the process with a different length 2x4 for the 2nd block.