Extending tomato height

The only things I grow in my greenhouses are toms, cuc’s and a few bell peppers, so I never fill the beds. You don’t actually have to waste any space as the horizontals can swap canes if you want them to. If I’d planted them deeper I wouldn’t have seen the armpits constantly growing from each pinched out leaf branch. Doing it this way I can see all the armpits above ground. This plant currently has 7 fruit branches with about 40 cm growing room still available before reaching the angled roof. Potentially I could get 9-10 fruit branches without also attempting to tie them into the angled roof . It might not be for everyone but, I hate having to pinch out the top of the plant just when the plant is really getting going. The fruit branches always seem to get bigger and better the higher you go.