Wowza! Thanks everyone for all the good input. On long hauls, my truck bed will have my truck camper in it (see truckcampermagazine.com to find out more about those, sometimes called slide-in campers), so the engine will either have to be on the boat or I will have to fashion a mount on the trailer. In Good Old Boat #95, March/April 2014, there is a Review Boat article on a Montgomery 17 with a photo showing the owner's engine mounted on the front of his trailer. He also uses the boom mounted to the forward side of the mast as a gin pole while using the mainsheet tackle to raise the mast. My boat has backing plates on the inside of the transom for the outboard mount, but it appears to be shoddy installation, so will be removed and made more robust. The square post my trailer winch is mounted on is 6 ft. long (the trailer was for a deeper draft sailboat, so I didn't cut it down), so I should be able to put a mount on that with square U-bolts if I don't trailer the engine on the boat. Options, options... Anyway, thanks again everyone for your valuable input.