Now that I think about it, though, a lot of gyms have the magnetic weights that you stick on the stacks or the ones made to fit on top of the stack as well. They would still probably not like you strapping a whole bunch of weight to it.
Ye olde natty fatty goals:
#1-compete in a pl meet
#2-get a 3/4/5 in the gym, then at a meet
#3-get a 4/5/6 in the gym, then at a meet
#4-set/break at least one state record