6hp, 8hp or 9.9hp for my 12ft SIB?

[alanfox55]

I don't know but I would think that a 20 hp 4 stroke would be better for trolling than the smaller engines because it would have more power to push the boat at a lower RPM.

 

[Sea Rider]

For that affordable price difference would go for the 20 HP. Max HP power is achieved at full throttle and max wot revs, so not an issue as all 3 outboards have near same min idle rpm for trolling. We're talking about 4 strokes OB's right. 2 strokes have issues in terms of plug being fouled when trolling for long time periods as opposed to 4 strokes ones.

Happy Boating

 

[Slayer33]

Thanks guys... and yes all 4 stroke OBs.

I think I am going to go with the 20hp over the 15.. Its such a small difference in price $150 that I would regret not getting it.. I checked my transom and it says it can handle a max motor hp of 20hp and max weight of 362 lbs. I think the Mercury 20hp 4 stroke is around 115lbs.