I am in the process of repowering a 23 ft Sea Ox. The 235 Sea Drive is off the boat and I will be using a bracket and single outboard off the back of the full transom. Are 5 year old 200-225 outboards used in saltwater worth looking into? I can see that they cost about half of new in some cases. My reference pt is a 200 Opti for 12K. Should I be concerned with weight of the outboard? The Sea Drive was a monster, at least 600 lbs. The bracket will push the new outboard back 20 some inches. If weight is a concern, does that take 4 stroke engines off the table? The boat is in Upstate NY - thanks for any input.