With dads targa he got the 115 four stroke for the fumes and also u don't have to worry bout buying oil and losing an oil injector while on the lake. The four stroke he has is super quiet. Dropped it in one morning and there were 2 - two stroke outboards running, one on each side, I went to park the truck came back jumped in thd boat and grinder the starter cuz it was already running. I'm not sure wat the advantages are to having a two stroke but if u are going to troll with it I definitely say get the four stroke u will not be disappointed. The new mercury 4 strokes also are very easy to change the oil in the spring. Just tip the outboard down and to the port side, take out the drain plug and out comes the oil. No mess in the motor housing. Then just change the filter and add oil .. 20 minute job. Just my opinion good luck either way