Check out the boats at the Hoppe gathering on April 13. Most have ob's with control handles that swivel to the vertical. An 8hp Yamaha/Nissan/Merc 2-cycle should be a good choice. I have a 5hp Merc (very light) and it works fine in most conditions on the SF Bay. Fighting an ebb at the GG, however, is another matter The cost difference, as I recall, is about 1/3 less compared with the the 8hp 2-cycle.