If you already ice fish and have a portable, your only real investment should be a spear to start out anyway. I haven't done it many times, but when I have, we used a portable sled, drilled our spear hole with an auger, and lowered a hookless husky jerk down the hole attached to a leader with a 3 oz weight tied to it on the bottom. and we smoked the hell out of them. it was a blast. And if I remember right, the first time i went my buddy had gone out to his garden shed and found an old heavy ice chipper and ground down 5 points and threw it in the box. it was about as redneck as it gets, but holy smokes did it hook me.