Supporting determinate toms.

In recent years I've just stuck 1 cane in like I do with the intermediate ones and used string to support the trusses in a very Heath Robinson sort of way. Its resulted in lots of snapped branches when it gets a little windy.

Does anyone have any better solutions - Im growing in pots 12" in diameter if it matters. The pots are lined up against a wall if it can be used.  Varieties off the top of my head are Roma, Super Roma , Sub Arctic Plenty, Glacier and totem.