SO it's edema and not all fat? Person has lymphedema maybe? There are sites that recommend various things such as effleurage-very light finger/palm stroking distal to proximal.
http://www.cancer.gov/cancertopics/p...ge3#Section_46
I have a friend with post polio sx who has had success with these practices.
As far as coban Ive used it several times without it getting hard. You do have to be careful rolling it back up not to stretch it. And usually its not the initial layer, more like the 3rd or 4th over batting, stockinette or gauze.