I'm planning on making a bucket wheel to replace the one I have now (it's a comfort wheel and I just want to get something different). I have the general directions for making one, and I'm okay with those. However, I was wondering: is it generally recommended to put traction on them or should you go without? I saw one website that said you can add bath tub grips for traction if you'd like, but most other places don't mention anything, that I've seen. So should traction be added or is it a standard bucket wheel okay without it?