QUOTE="rickycz, post: 126833, member: 12753"]ok.....so you have me curious about your insight into the choice of a 115 hp yamaha for our 20' SSRX. What do you mean that we are not taking advantage of the SPS package with this motor. what is lacking without a minimum of a 150 HP? How fast will this boat go with this motor if we have 6 people and 1 tuber? how fast if we have 4 people riding only? I am not sure what the deal is on performance with the 115 hp motor. Can't I pull a tuber with people riding too?[/QUOTE]
I stumbled across the article below which is about HP and Pontoons. I thought it kind of connected to this discussion. Perhaps just some extra food for thought.
I think it all depends on intended typical use, future use as family grows or shrinks, and budget. Those are sometimes tough to balance. I think the article below somewhat mimics adivce in these forums over time.
I think a 115 HP certainly hits an introductory spot for still being able to do some light water sports, and cruising around with no problem. With a light load, it can deliver a sporty ride on and SPS tritoon. If loaded up heavily, then it gets sluggish more quickly, and may not have the get up and go for some watesports enthusiasts.
A 150 HP steps up the watersport options, even with a good load on the boat. It has nice hole shot and overall is going to sustain speed and handling with more people on it. Overall its a very good performer for its cost.
200 HP and up starts to really move into a sport boat speed and handling direction with little drop off when under load. Hole shot is going to be great in almost all load situations, and really you are just tweaking top in speed as you go up from here in HP.
https://www.bridgemarina.com/blog/how-much-horsepower-should-i-get-for-my-new-pontoon-boat--10117