hog hunting knives

I want a minimum of 8 inch bad with 9 or 10 inches being ideal for me. I want mine to have a cutting edge on both the top and bottom sides of the knife. Blade needs to be smooth and not to thick but not thin or weak. Handle needs to have some grip to it, I prefer it to be coated in rubber also. An absolute must for me is to have stops on top and bottom side of the handle to prevent my hand from slipping off the handle and sliding down the blade. If your in water or blood sprays back on your hand, your hand can easily slip down onto the blade. A good knife for me will have a little weight to it also.
I don't flip pigs to stab them. To me, that's pointless and adds more risk to the dog or dogs. I only flip to tie. Often times I let the dog hold while I hit the pig in the heart with the knife, just one stab is all it usually takes to hit it and I step back and let the dog continue to hold. Within 3 to 10 seconds heart hit pigs will not be on their feet anymore. To feel confident about hitting the heart of a big thick 250 plus pound boar, I want a long blade. Sometimes I need to grab one back leg of a really big boar if he only has 1 dog on him and stab the boar with my other hand which can sometimes really get you stretched out. When your stretched out you need a knife that's built right and takes minimal effort to make it through the boar. Knowing where to stab for the heart is half the battle, getting to it when your holding a back leg of a stout heavy pig that's thrashing around or trying to turn to get you means you got to pull harder on the leg your holding up which means less leverage on the knife to sink it. Hit the right spot and it's like butter. Miss a little and you get lung but are going through shield and need to apply more force. It's all easy on sows and small boars but the big boars make you appreciate good equipment when your going at it alone and your dog is too.