Just finished installing a Simrad a/p.... boat has stern drive with kicker on the swim grid. Used a liquid tie bar (valve) so the kicker and stern drive steer when trolling on kicker. Installation was more involved than if the kicker was attached with solid tie bar to the main. Fished the boat on the weekend after a quick calibration and setup and am pleased with the result so far. I think we will see more a/p on boats 18 ft and up in the years to come. I would also reccomend a full a/p plumbed into the steering rather than a remote control steering device.