my formula would be this........ never tow something that weighs more than you, trailor included.
it isnt the "get it moving and stay moving safely" it more a " how do you expect something that was designed to stop 2000 lbs to be able stop 5000lbs at all !!!!"
the crv is gonna weigh maybe 3500 lbs the trailor should be at least 1000lbs(if it's not you shouldnt even think of putting the crv on it in the first place) so that is 4500 lbs, twice what your tracker weighs. it would be rediculous to think that the japs designed it to stop anything more than maybe 3500 lbs max(i wouldnt even think it would be 3500, but i'll go out on a limb)