I had the unfortunate luck of having largemouth bass destroy topwater frogs and loosing the weight. I designed this to plug the hole on a Lunker hunt topwater frog, this design should also fit others as well, it has a cavity that should take a standard size split shot weight and hold in there pretty well, you can use pliers to expand it a little or nestle it in better.

This breathed new life into my frog and only costs 1g of filament to print. I printed in PLA+ but I'm sure any PLA would do just fine. Sharing so others can enjoy as well.