This is my first year deliberately growing determinates. I gritted my teeth and pruned them. Mostly I took off suckers that weren’t even flowering yet, although a few got inadvertently trimmed. The plants look very healthy and an heirloom variety I tried called Old Brooks.
https://www.totallytomato.com/product/T00518/88
They are every bit as good looking as the pictures. Don’t know about the taste. They need to ripen first.
But it does look like the pruning helped the plants. It’s supposed to give you bigger and better quality fruits instead of lots of small stuff.
I did a little ‘pruning’ - cut off everything low that was not flowering & a few further up that were nothing but leaves. Between that and finding at least 5 hornworms thus far, my plants are looking really good and are loaded with tomatoes.
The Sungold has gone ballistic ... taken over the 4 x 8 raised bed and is spilling out all over - I’ve even cut a few branches off to keep it out of my fencing.