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Submitted: 10-01-2007 by J.C.
I have the TK-2, which is plenty room for me and my twin girls, age 4, plus gear in front and back. Very stable, but water collects in bladder chamber which is no fun trying to deflate it and put in vehicle at the end of the run. Inflates easily, tracks well, but seats are limited in the amount you can adjust them.