Hi Gents

continually toying with the idea of updating the power plant on my 1996 6.4m sportfish.

currently have a 2006 175 Optimax which seems almost perfect for it, great punch.. handles all loads well... good on fuel. Basically always fish as a single boat and have started to have some age based issues with the opti which I would rather not have out in the middle of the ocean (oil reservoir level transmitter, injectors, exhaust manifold etc).

Keen on the 150 merc fourstroke but have struggled to find a lot of info on their performance on bigger boats, I think it would be fine but fear of the unknown I guess.

Keen to hear if anyone else has one and has repowered to see what they went with and how happy they are?