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Since you already have the Hook just get a battery, fab up a simple rig for testing and give it a shot. If you like it get a case and ice ducer, if not try something else.
yeah that probably will work fine. i like the mechanical flashers on the ice over the lcd units i've used (helix/lx6/i67c) but to each their own. my only complaint typically is fishing around other people. many of the lcd units go nuts and are hard to clear out when around other flashers.