rod&reel tip-ups on peir?
My grandpa gave me these small "tip-ups" for a rod&reel. Back before i was born he would fish the North Pier in Racine WI, where i go now, for trout, salmon, perch, and walleye. He said he used to use them but before I left his house from a week long fishing trip with him i forgot to ask how to use them, so does anyone know how to use them???