If you can't weld you could glue the repair panel on. You really need to cut the rust out and use new metal to repair it. Using bondo would be temp fix IMO. And usually bubbles or falls out.I can't weld. Plus, its pretty invisible down there, I'll be using a rattle can finish.
Hey, MrOld, I get it, "church-going," LOL. Good idea about the rust inhibitor, thx. You coulda had this car, I bought it from a guy in Dumas.
Cool idea with the tubing. I use a plastic syringe, I carefully remove lid and stir without getting POR in the rim then use plastic syringe to remove POR from can and put in mixing cup. Immediately cover can with Saran wrap and replace lid. Works pretty well for me. Haven't had a can go bad since started doing it this way.if you buy POR, dont open the can- get some clear hardware store tubing about the size of your biggest phillips screwdriver, pierce 2 holes in the lid, push a loop of the tubing in to seal the holes... pull one end out, pour a little at a time into a disposable plastic container, plug the can immediately. POR if opened will jell up in a few hours if exposed to humid air- using the tubing Ive had a can useable a year or more later. dont clean the containers, leave the brush in it, next day pull brush/paint chunk out and you can reuse the cup dont get it on your skin, it dont come off. and dont brush POR15 over paint, it wont stick to paint.