I've had the kayak for about 2 weeks and have been out a half dozen times. I think it is very stable and seaworthy. I've taken it straight into a 15+ mph wind with chop at 4-4.5 mph and it did just fine. A little spray but that comes with the territory in a yak. In calmer waters, I troll shorelines standing up casting, skipping, etc. Throwing frogs shouldn't be an issue. I'm 180 pounds so I don't know if you are a lot bigger if that would make it tougher, I don't know. I think the cockpit has plenty of room and I can turn around, stoop down to land fish, etc.
I've never been in a yak before buying this boat. I'm a bit spoiled with my bass boat at home and honestly was concerned about how fishing friendly this would actually be. Pleasantly surprised with how good of a platform it is.
I did buy seat risers from Navarre Kayak, to raise the back of the seat up 3 inches (more level with the front height of the seat). I'm not a fan of sitting low with your knees way up high - and these really help. Now I sit up higher when cruising/trolling and can see where I'm going or casting better. Very easy to go from sitting position to standing with the seat risers. I highly recommend them (https://navarrekayakfishing.com/shop/old-town-seat-risers/)
The hull is very hefty and quite substantial. If it has any drawback at all it is that it is extremely heavy for one person lift, pull, launch, etc. Wheels are a must if you have any distance at all to take it on land, or from your vehicle to the launch. If you have a trailer it would be much easier to transport/launch. If not, be sure you're in shape to maneuver it. But all this extra weight does make it a very stable, safe fishing machine!