Cripes; I've had the 6x4 for years...I guess it's time to pay attention to what I have.
I'll try your suggestions, look for an Owner's Manual, maybe a service manual, and perhaps customize the front bumper to weights and receivor hitch.
Took off one set of tires. What an improvement in steering that is.First off, your gator does not have the ability to shift between 2 and 4 wheel drive. The rear 4 wheels are always driven. The lever next to the shifter locks the differential--meaning all 4 rear wheels are driven at the same speed. This does make the ute very hard to turn. With the differential lock out, it can still be hard to turn. Here are some ideas: adjust tire pressure so that the rear tires have a bit more pressure than the middle ones. This increases weight on the front wheels. If there is a load in the box, try to keep it forward. The same reasoning applies. If your front shocks are adjustable for preload, try increasing the preload on the front shocks. Again, the more weight on the front wheels, the better it will turn. If load carrying and traction are not an issue, remove the intermediate wheels. This will make the turning quite positive, but be advised your braking and traction will be reduced. This doesn't cost anything to try. There is no power to the front wheels, and there is no suspension on the rear. There are no brakes on the front wheels. The rear wheels (all 4) want to go in a straight line. The less weight on the front, the less steering ability you have. You might also try adding some weight to the front, or installing slightly taller tires on the front.
Hope this helps
For starters, the load max is a bit over 1000# on our 2007 diesel. You already know that bouncing happens. So cut your load in half and know that the rears are gonna take all the bounce load, if and when it happens. The limits expect that both rears are sharing the load. By removing the frt rears, you just moved a bunch of weight to the rear hubs and front suspension which you now know solved your steering issue. We got 8 years out of the front shocks and that was stretching it. So get ready to replace them more often and also the front swing arms loosening - say bushings. Speaking of that, cranking the steering wheel is often worth a grunt as it is stock. How do you like it now? Add steering hardware to the increased wear and tear list.By restrictions are you thinking carrying capacity and traction? When firewood cutting in our steep woodlot, I'll put the tires back on.
Receiver hitch front (and back) is a good idea. I can then add a chainsaw winch...the Lewis brand even has a receiver hitch adapter.
https://www.loghomestore.com/product/lewis-winch/ (I'll read up on how to add an image, rather than a link to a page...sorry).