my 1st trawler
was a 1978 mainship 34---loved it, but had to learn a few things: since i'd always had gas boats previously, what did i know about throttling??? nothing/nada/zip, so it was power down/full throttle. wow, the smoke was sure ugly, but we didn't have mosquitos around the boat. i was always nervous about taking the boat out thinking the e.p. a. would jump all over me. near the end of the season a buddy told me what to do---power down to 3/4 full throttle....voila, no more smoke , 9-10 knots (w/ perkins
turbo 165 h.p.) and 2 gal/hr. the mainship is a semi-displacement hull
boat and not meant to plane ( squirrelly...i'd say downright dangerous). have fun. i know yer gonna love it....