I have a 150 with hydraulic (not power assisted) steering and the only time I wish I had the power assistance is when I’m up at speed and want to make really hard turns. Otherwise for the normal turns I make at speed, I don’t have any issues. I don’t have any issues with steering when I’m at slow/idle speed for docking. I think for docking or maneuvering in tight quarters you get better response with fewer wheel turns with cable vs hydraulic. I feel like I’m spinning the wheel a thousand times when I am trying to spin the boat in tight quarters.Tomc, Thanks for the info, My biggest concern was , like you I have a 115HP on 21ft pontoon. Most feedback I’ve seen has been anything with 150Hp and up it would help. But on the 115 HP was kinda iffy. My thoughts now are leaning not to add it seeing we only have a 115HP. I believe most of the time we will be “cruising” on the lake anyway.