We have had success in using our TurboSwing with a kicker motor before. Depending on your specific set up you may have to remove the bar when you are wanting to use the kicker motor. What we have found is most people are typically fishing with friends using the kicker motor or out another day towing family so it seems to work out well. If this is not the case the bar is very easily removed by unclipping the provided carabiner clip and pulling the bar straight out of the tube holders while the hardware stays mounted. We would recommend the XXL for the 150 Mercury.