I have been using synthetics since 1975 when Amsoil had only one 2 cycle oil for all applications. I was using it in my dirt bikes at 100 to I and it was better than all the 2 cycle oil available at that time, over doubling the time needed for a top end rebuild. Started using the Pennzoil syn. Over 20 years ago because not only was it a full synthetic, it was biodegradable. When I learned it was discontinued I was able to get 16 gallons. Now that it’s gone I’ve been looking for a replacement. There have been others that are no longer available. At this time there are 2 outboard motor, biodegradable, 2 cycle full synthetics that I know of. One is Bel Ray that I’m trying this summer. I can’t offer an inexpensive 2 cycle full synthetic but I do run 3oz. per gallon in most all my outboard motors. I have videos of some of them on You Tube. Not a recommendation. Offered as information only.Tubs
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.