I have an addiction and enjoy buying every frog and trying it out....As stated above, it is hard to beat the Booyah Pad crusher if you consider the Price, Size Options, Popping and standard, and they will work just fine no matter where you fish...In heavy cover I like a harder frog, also one that has a narrow nose and casts far, so I like the Spro and the Swamp Donkey for those situations, but almost all frogs are good once you learn how to fish them..I feel the Poppin Phattie from Snag Proof is the best poppin frog for heavy cover, it is the only one I have used that will work in cover and not get jammed up...Scum Frog also makes a chugger that I really like for the sound it makes, and their Trophy Series is a steal at under $6.
I used to always complain about hook up ratio with hollow frogs until my friend made a really good point....How many strikes do you convert on a topwater with treble hooks? It is probably similar since fish will miss a walking bait in open water as well, if they want the frog they will take it down and I have messed around in ponds and I removed the hooks and you would be surprised how long they hold them..I think of them now as a soft bait, if your frog goes under, chances are that fish will move with it for at least 5 seconds if not more. I wouldn't wait that long of course, but my new favorite frog only has one hook and I think that is better since you don't have to slam home 2 Barbs on 2 thick hooks that are actually working against each other unless you bend them perfectly parrallel.
Evergreen makes a frog called the Big Bite Frog that has one hook right in the middle and has ridges on the bottom to make noise on the mat. It is not like the Pivot Frog, it is fixed in one place over a silicone body, and has a super short skirt with only a few strands so it will not block the hook point. Since the weight is connected to the hook, it never takes on water. I rarely miss fish on that frog. It also has a spot for a blade underneath, which makes it a good wake bait with a nice wobble. You can find them for a good price if you shop around, They are expensive due to the quality of material they use. The hook is also super sharp and will not bend no matter how hard you try...Not sure why it is not more popular but I first found out about it when a Pro had it on his rod at Toho...