My most reliable fishing partner is my dog. Always wants to go, doesn't mind falling in, has all his own stuff and never outfishes me, never tells me I shoulda been here yesterday. He's a retriever, about 70 lbs. So I can't take him on my toon, together we're just too big. But I'd like to get an inflatable pontoon or raft for drifting. In your experience, what kind of floor should I look for, and have you any other advice about dogs and inflatables?