I'm thinking about purchasing a used CA Colorado. I've checked out the forum a bit, and I see a wide range of thoughts on the boat: inexpensive/cheap, some issues with adapters for pumps, etc. There seems to be very little chatter about using it on moving water. That's my end game really - drifting more so than lake-use. Who has an opinion about this boat - and boats in this class - on moving water? I'm talking particularly about the Yak. I realize that Ensign to Bullfrog is different than the Canyon in terms of water - and I welcome thoughts about both scenarios.