About a month ago my bat was running 30 mph 1/2 gas and 3 people. 22 tracker fish barge w 115 merc ct. the boat started slowing down every weekend down to 22-23 mph with same load. Problem was water leaking into rear port pontoon. leak has to be on top because nothing leaking when on trailer. Drained water out 27 gallons approx 218lbs. now back to 29 - 30 again. Dealer aware of this and will repair when i bring it in. Probably at end of summer, i drain after each use about 2.5 - 3 gallons, after 6-7 hrs on water. I boat in gulf so choppy almost all the time and i go 20 - 30 miles out. So im in the monitor and drain mode for the summer