There is no good portable, not worth the money. I sold my big boat and went smaller to a 16' tiller and have a fixed mount on a small piece of plywood and a short 3' metal antenna mounted on a small piece of plywood, Have a wire coming from my battery that I plug my radio in. When done for the day I store the whole thing in my rod locker or storage compartment. works great. Won't get out as far as the big 8' whip but does a great job, better than a portable.