I've posted the instructions a couple of times, (sorry no pics yet)
but it's not that hard to do. It sound like you've got a pretty good set up.
Take a rubber band and pull off 10 to 15 feet of line deeper than you want to fish. Tie the rubber band around your line with a couple of half hitches. open the loop on the rubber band and slide it over the spool on your tip up. re-wrap the line onto the spool by hand to the depth you want to fish, and set up your tip up normally.
Now a fish hits, runs off the 10 feet of line, the rubber band pulls on the line (setting the hooks) and then the fish breaks the rubber band and continues to run. Only difference is he can't drop the bait because the hooks have been set.
Hope this helps,
Wiener