Here's my setup. Triple in the back, side by side driver, double jump in front. I never had to worry about small kids so the rear driver didn't matter to me but I understand the concerns of people that advocate that. The boat is a Diamondback, titled as being 15 feet but the only way you get 15 out of it is total overall length. Hull, from transom to nose cap, is a little over 14' 6". This has served me well as I can put 7 on the boat when I need to, runs fine when it's just the wife and me.