I was using rubber bands to hold the hook on my wood stick tip up reel, but the rubber bands get old and break. So I drew this up on Sketchup and it seems to work fine. Print out two then cut a piece of 1/8" shock cord 6 1/2" long tie knots in the ends (and singe them with a lighter), then super glue two pieces together with the cord going through.

no rafts or supports needed
you might ned to flip it on the build plate so the grooves are facing up