I don't know about the BEST place to crash near the Cancun airport, but I know the WORST. Years ago, AeroCozumel was flying a couple of Fairchild (Fokker) F-27s on a regular route from Cozumel to Cancun and points beyond. One of their planes have just cleared the end of the Cancun runway, when it lost power and went down in the swap at the end of the runway. No one was killed in the crash, but one passenger did die of a heart attack shortly after the fact. The crashed plane was clearly visible (as well as the giant AEROCOZUMEL name emblazoned on its side) for every other plane taking off and landing at Cancun. Bad advertising. The solution was to have a guy go out with a bucket of paint and paint over the name on the downed craft. We used to joke that from then on, all Aerocozumel pilots were ordered to carry a bucket of paint on board, just in case.
Oh, wait... is that what you meant by crashing near the Cancun airport?