Actually, I didn't attach mine at all. I duct taped the hoses together at the ends
and tucked them way up into my second sleeve...which I had my girlfriend sew
so that there was a gap in the stitching between the top and middle back of my
shoulder. That way, when I put my arms straight out or rotate them up, the hoses
feed into that gap and into the back of my vest instead of bunching up.