No personal experience with fourstrokes, but the marina where I keep my houseboat uses the Yamaha fourstrokes on their rental party barges. The owner says they hold up really well.
Yes and for excellent reasons after reading some of the pollution reports on some of the lakes before they banned the use of 2 stroke engines. newest reports show a definite lowering of the very same pollutants. I dont really believe the blame falls on 2 stroke engines from fishing boats but from the hundreds of jet skis and such that clogged the waterways. After banning 2 strokes and the jet skis disappeared the lakes started to clean up visibly. LawdogAh yes, Lawdog. That's the way it is in Cali.