I tried the tugger and couldnt get it to work. I think I have don't have enough skin. I'm sorry to hear about the blisters but the skin is caught and held by friction and a blister could occur. Fuck that. I pulled a blister from using my modified phalosan (my fault for not tapping it completely) it took forever to heal and you have to avoid sex cause she'll think you got herpes. I told mine I got it caught in my zipper. Well, Ive been using the modified vacextender before the tugger http://www.autoextender.com/products.html. It has worked well. but you have to tape the entire head(pain in the ass). better than the strapping but not great, ie. I still need to remove every 1hour or so but its more comfortable. IDK how anyone can wear any extender strapping method for more than 40 min without pain.