My husband and I are looking to purchase a new pontoon boat. We started looking at 20 ft. with a 90 4 stroke Yamaha OB because most of the time,it will just be the two of us on board. One of the salesmen told us to go for a 22 ft. with a 115 hp. Yamaha 4 stroke. The reason for this is where we like to go, Lake Mojave, the water can be choppy. He says the boat will dolphin and not be a good ride. we have had a demo on a 22 ft. with a 90 and a 115 hp. both were fine,but the water was calm. We are looking at Bennington,Sweetwater, and Harris. We will be just cruising and maybe pulling a tube for grandkids. Also we like to cove camp at the lake. Our demo was in the Sweetwater. It is the Bennington salesperson telling us to go to a 22 ft.We do know about tritoons,lifting strakes, underdeck skin etc. We are trying to get in a pontoon that will make us happy, not overbuy or under buy. It is a big and costly decision. Any thoughts? Thank you in advance!