I am getting a Ranger Z185 and I need to know if 1 or 2 power poles are needed for docking the boat. I plan to pull up to the dock, jump off, push the boat away from the dock, lower the power pole(s), and then tie off the front cleat to the dock. Will 1 power pole hold the boat away from the dock or do I need 2? I am trying to avoid unnecessary scratches. I know I can beach the boat with 1, just not sure about docking it.