Gardener Scott demonstrated how to tie a string around the base of the plant, tie the other end to the top of the trellis, leaving some slack. As the tomato plant grows you wrap the main stem around the string, helping it climb. However, once my plants started filling out they didn't seem to need any tying.
Getting back to that idea, I was looking through my stack of reclaimed wood and found some 8-foot long 2X4's that I think would be great to make another trellis like this one...
I made that trellis for Dear Wife's bitter mellons last year. It is six feet high, which was about the tallest she wanted it so she could reach in and pick the bitter melons on top.
But for the cherry tomatoes, I think an 8 foot high trellis would be better. I know my tomatoes got over 6 feet tall last year and they flopped over because the 2-1/2-feet tall wire tomato cages I used were not high enough. I don't know if my tomatoes will grow 8 feet tall, but at least they would have that much headroom up a string to climb.
I also have another section of 2X4 wire fencing that would cover both sides of the trellis if I wanted to plant a climbing vine plant in there some day.
I have not forgotten the cattle panel as a trellis suggestion, either, but I think I just want to use what salvaged lumber and leftover wire fencing I have on hand first before I purchase any new materials.
The price of those cattle panels continues to go up. Here is our current price where I live...
If the salvaged wood trellis does not work out this year for the tomatoes, next year I'll just invest in some of those cattle panels. I know a number of people really like them, they last forever, and take almost no time to put up.
They sure look nice in this Google picture...