alot of people do it.. depends on location, how close you are to neighbors and many other things.. i have never personally done it.. reguardless it is too late to do this year
i've actually seen this done a few times... very effectively too. My buddy just made sure to tie the plant down, it only grew about 3-4 ft tall, but about 4 ft wide... He also said that he always kept his garden fairly ungroomed so any passer by didnt notice the pot plants amongst the tomato plants and other weeds
i have done this a few times and seen a few friends try it...they set up 8 tomato plants...3 on the front...3 in the back..and one on each side...then grew the plant in the middle..tide up the tomato plants with some sticks and used pull ties/garbage ties to hold them up.
it wokr sagreat u just grow 1 or 2 plants every 8 tomato plants...same watering schedule and everything to