I have 2 plants in their second year, one cascade and one nugget. Right now they are both growing side shoots about 1.5-2 ft long and I've just been wrapping them around the string the main bines are on. I'm wondering if they should just be trimmed off though, because I dont want them to be too thick and not get air circulation or block out too much sun. Heres a picture so you can see them.
Cascade is on the right and Nugget on the left.