the problem i have with most simulators is that i live up at 8000' msl and fly off of rough grass

is there any simulator that would allow the user to crank up the grass "roughness" and also change the height of which you fly at?

any recomendations?

i want to get back into flying r/c but im finacially strapped to buy any thing right now, but i thought a good sim could help me brush up and stay up until i can afford to get back into it

thanks
Brian S