Look at the 20SL pictured on page 28 of the 2012 brochure. It's in a normal sitting position (with the stern end of the tubes a bit lower in the water.) If your boat is dramatically different that this picture...have your dealer give it a quick check for a leaky tube. A shorter boat like a 20' or 17' will appear "stouter" than a longer boat if you are comparing to others on the lake...and tritoons have the extra bouyancy of a thrid tube!
Sometimes it's nearly impossible to avoid a "swamped deck" in rough water no matter how big your boat, but a couple of pointers include:
1. Slow down gradually and try not to abruptly pull back on the throttle.
2. A modest zigzag pattern across the chop, then with the chop, can sometimes help.
3. The captain maintains the right to "balance" the passenger load...don't be afraid to ask someone to move positions in the boat to avoid a heavily weighted bow area!

TB