Some soft fruits, like rasps like being bent over at the top, and it's said that they fruit better that way. I think I agree, but I used to just tie them horzontally along a wire about 4 ft off the ground. I don't bother now, as Joan J are so late and flourish well anyway, but why not consider doing this to toms?
Our GH toms are right up into the roof of the GH and the decision now, is whether to move them around, or cut one's losses and pinch them out...
A good chum lets her toms go well into the late autumn, with some at 10 ft or more, but then, she has a GH as big as the Albert Hall...