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Thanks to everyone for the tips. Mission accomplished. I used a rope to create a sling that went up into the pinch point of the motor and motor mount. That was hung from a temporary beam supported by a step ladder and a cross beam of my carport. I then used a regular auto shop jack and a piece of wood to put upward pressure on the motor at the motor mount. Removed blind bolts completely and then gingerly backed out top bolts one at a time. The motor shifted when I removed the starboard top bolt and aligned with hole #2 on that side. I re-inserted as a temporary hold and the shifted the upward pressure slightly to port side of motor mount. Removed top port side bolt and got to hole #3 and re-inserted bolt. Then same procedure to get starboard to hole #3. The rope did its job as a safety harness only allowing slight movement that could be controlled with the jack or by lifting manually. Had no one around to help and never had an oh s$%#@ moment. Bolted up tight after putting tape over stern side of blind holes. Used epoxy resin and saline bottle to fill old holes after tilting trailer way up in front. Tape will prevent epoxy from attaching itself to motor mount. To drill the green holes at Tom's recommendation I drilled from stern toward splash well and angled more steeply than the transom angle, and have just enough room for the washer on the splash well side. If you are drilling at the same angle as the transom you will definitely have to go to the 4 th hole up. I have only run this boat once since purchase but am interested to see how this works out. I have almost identical [1964 with a 70 hp 2-stroke Yamaha] and I plan to do the same to it next winter.