Pruning Tomatoes & Potato Support

I always prune tomatoes up off the ground to keep the leaves away from the soil. I also prune to allow air. I live in a humid area, and pruning helps prevent problems. It looks like I pruned to almost nothing, but soon the plants will be full again.
My potatoes are falling over from heavy rains, and they are covering my beans and peppers. It’s a tight fit to add potatoes to the garden this year. So I decided to add a support. Hopefully, that will work.