Froggin is one my favourite techniques, and I've learned a ton over the last couple years.
- Use a soft body frog like a Live Target. They compress really easily. I use these in slop and pads. I use Spro Bronze eye popping frogs in grass or more open water. The spro's are not as soft, so spend some time "working it in" with your hands when you take it out the package, kind of like working in a new baseball glove.
- Trim the tails. I trim the length to about 2-2.5 inches in length. This creates a more compact profile, and a fish that only wants to "smack" the bait comes closer to the hooks this way.
- Bend the hooks out. Flip the frog over the hooks and turn it around so the hooks are totally exposed. Take two pairs of pliers and put one one each hook, and bend each one away from the other at the same time. This will expose the hook points more (yes, a bit less weedless but will hook up far better)
- Sharpen the hooks!! This never gets talked about. While you still have the hooks exposed, take a hook file and sharpen each hook until they are sticky sharp (if your thumbnail "sticks" to the hookpoint, rather than slides across it, you're good to go). Think about a bass hitting the frog, and maybe not grabbing it totally. Dull hooks will allow the fish to just slide right off if you don't get a solid hookset. The sticky hooks help to keep the bait just pinned enough to give you the time to react and set the hook.
I've noticed my hook ups have gone way up since I've started doing these things.Another thing is to make sure the rod you are using is stout enough and has a fast enough tip to set the hook quickly.
Yes, many times a frog will get "smacked" instead of eaten. I've found if a larger fish smacks the frog, the sticky hooks sometimes help to pin the frog to the fish and you can set the hook. A lot of smaller fish will smack the legs and may not hit again.
Hope this helps