I use the Bite Me Box Tip Up and love it. I use to use the underwater tip ups and got sick of tangled lines, wind trips, and frozen holes. I dont have those problems now and wind up at the end of the day is a breeze! I bought mine online. The cool part was it came completly assembled and ready to fish.
Now when we get a bite we yell BITE ME! It sounds better than flag. Try them.