Felt exactly the same. I found a conduit coupler, basically a tube about 2.5" long and 1.75" in diamater, at my home store for less than 50 cents. Attached it to my hip pack belt with a couple of zip ties and some duct tape. It works great. Net handle slides easily into the tube and the net sits securely and comfortably with handle down and bag up. I still have a section of bungee cord attached to the net as a saftey tether.
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I'd say, measure your net handle and head to the plumbing and / or electrical section of your local home store and see what you can find. It should work with a wader belt.