I use the wooden tip ups. I screwed in a eye loop to the bottom of the tip up. Then I take a yellow planner board release and and tie it to the eye loop with tip up line. Leave about 4 inches of line in the middle. When I put the big sucker down, I clip the release on the line . If the sucker trips the flag, just take a bigger bite on the line with the clip. It should work on plastic tip ups too.