Like my trailer mover?

I don't have any issues with power/torque of the motors, but I do with traction.

I have a single axle so the tongue weight is heavier. I get stuck easily when trying to move around on dirt/grass or inclines more than 1-2 inches. The wheels on the mover spin. So either I need more weight on the mover or larger tires. Usually end up tearing up the grass and digging a hole...

I use them mover all the time to get the boat from the alley into the garage and lined up, so I can then push it out the rear garage door into the yard. I put the mover in neutral and push the boat by hand as fast as I can. This give me some momentum(yes, it's terrifying) to get onto the grass. Then I use my truck to back it up further if needed....