I am new to the vertical caving world (after getting out of caving all together until recently) but I have been a high angle rope instructor for many years (20+). I am trying to build my own rope walker system. I tried the Frog system but being quite top heavy... I'm fat but losing, it didn't work too well. I have been told that the walker tends to work better for guys like me so I am putting one together to try out. The only problem I am having is finding a chest roller. The only one I have found is a double roller and it is in the $200 range. Is there any other good alternatives out there?
I have tried to get in touch with the local Grotto but have been unsuccessful at this point.