I'm running a 9.9 Yamaha kicker on a Proline 25 Walk with a Stainless Marine integrated swim platform that carries a 225hp ETEC. Used a bracket from Adventure Marine on the west coast to mount the kicker on. 9.9 pushes the boat fine. Agree that you would need to be sure your swim platform could carry a kicker. Once you've fished with a kicker, it would be hard to go back to trolling with a big motor. Good luck getting setup.