I too got confused with johnnies attachment method lol.

I simply usually use got2b glued spiking glue for the base attachment on skin, as well as the temple flaps, but the front center of the hairline I use ORWG.. This gives me a secure hold for at least 4 days. I usually change after 3-5 days..

Another attachment I have done on poly.. Is first throw down regular scotch tape on the perimeter ... than on top of the scotch tape i lay down blue lace tape. when its time to remove, i just peel away the scotch tape.. On thicker poly its SUPER FUSS FREE.. but on the very thin skins, Even the scotch tape seems to leave a residue..

I have now tried duo tack.. That is tape with redliner on one side and bluetape on the other.. u put the red liner onto the skin and the blue tape goes facing your scalp. i tried it once. so far so good.

note: one consideration u have to make with skin units is whether or not u want to do a perimeter or full bond. WHen you only attach the perimeter than there is air between the scalp and skin.. this could cause the skin to make a noise sometimes when u touch it, or feel more unnatural. I think it also makes it feel hotter because ur scalp now can sweat ... But if u attach skin tightly to ur scalp.. lets say using GOT2 on ur whole head.. than it blocks the sweat glands and there is no air or room to build up sweat and oil... So its kind of more comforable when the skin is binded to ur head on a full perimeter than leaving air and space.. if that makes sense.