I'm in the process of purchasing a 35' sloop which has been re-powered with a 1995 Gray Marine 31 HP Gas Engine. Does anyone have info or experience using this type of engine? Also, I'm some what a novice with inboards, any suggestions on maintenance and care(oil changes, tune ups, winterizing, spring recommissioning)? Can this type of inboard be worked on and runned on dry dock? How is water pumped in for cooling on land? Thanks.