We just sold our 2017 Bennington 21SLXP Bi-toon that had sealed lifting strakes (inside and out), rough water package, tube upgrade to .100" and underdeck wave shield, equiped with a 115 Mercury Pro XS CT. This boat would run a solid 38mph coxed (full trim) to 40.8 with full tank and wife and I (350 lbs) onboard. I could easily out run tri toons of similar size and run on top of 2 footers with out one drop of water getting in. We are on a 10,300 acre lake and run the great lakes also. The only thing the tri toons had over this set up was the ability to corner, that's it! They weight more and have more drag.
We just ordered a new 22 LSB, equipped with the same under pinning's because of the success with the previous boat. Because of staying with the bi toon we were able to order other desirable trim and equipment. This boat listed out @ $74,153.00. Sold to us for $54,965.00 plus frt., prep., tax and registration for a total of $59503.90