Do you just use a net? I like the idea of a metal grid trellis. Hard to find online. Good to know 4 inches is best. I feel like a lot of my bud sites are very close together. Do you sometimes put two bud sites through a single square? First timer out hereI personally like my top and bottom trellis to have 4 inch squares. Imo easier to train/ weave the plants through 4 inch squares in the bottom trellis and you have more squares to support buds on the top trellis vs using 6 inch squares.