If I had to do that I would look at trying to rig up some pneumatic casters on it like the competition carts have.    Wouldn’t be very hard To do and then it should roll up even a very rudimentary ramp pretty easily.  It would raise the height of the grill a little bit.

not sure i would want to push one that heavy around especially since there are lighter ones

Look at blazin grill works and their comp. cart.

Look at blazin grill works and their comp. cart.

That grill is a beast too.  I took the pneumatic tires off of the used one I bought and put the hard rubber ones on so it would at least roll.  The MAK is lighter and may be one of the lightest out there that I have owned.