Axle nut tools? You mean those dumb things rockymountain sells that are supposed to go on the end of a ratchet or breaker bar? Good luck if that's what you have. The best axle nut tool I ever used was an 18" adjustable wrench. I got mine at harbor freight for about 20 bucks, and it's probably one of the most useful tools i've ever bought, you can even use it for intimidation purposes or bust some skulls with it in a bar fight if need be. (don't ask)
Before you even try to break them loose, get yourself a can of PB Blaster and soak the **** out of it, make sure you spray it a few times and let it work it's way into the threads for a day or 2. Not WD-40, not liquid wrench, they're garbage compared to PB Blaster.
I'd let that soak for a while, give it an hour and try if you want, i'd probably give it a day if I wasn't in a hurry. Have somebody sit on the quad, with their weight on the back of the seat, and holding the brake pedal down to lock the rear end. Then put that wrench on, and get ready to lift with your legs. Mine were so tight stock even on a 5 year old quad that I ended up lifting the rear of the quad off the ground, with my dad sitting on it and he weighs 240. I'm not sure how I managed to do that, i'm not even that big of a guy.
The first time mine was broke loose I ended up using a propane torch to heat the nuts up and then they finally broke loose. I think it was about a week long process by the time I got the wrench and gave up on trying to use a pair of slip joint pliers to turn it, bad idea on my part. Hopefully you can benefit from my mistakes.