This might seem like a dumb question, but where do you guys get the tubing you use for hook guards? I've done searches and I can't even figure out what the stuff is called. The guys at Lowe's and Home Depot just look at me like I'm nuts when I ask about it. Considering I've already been to the ER four times to have hooks removed from various appendages, I thought it might be a good idea to start being a little more careful.