Hi FullyCool
The strong tapes (I use Walkers No-Shine) which you can use for the sides and back are very strong. When they are fully cured they are stronger than the system base itself, so if someone tried to yank the system it would tear the base before the tapes would give way. Of course, the adhesive does weaken with time, and also if you get very hot and sweaty, although it varies from person to person. In my case (which I think is pretty typical) even after 12 - 14 days the tape is still very solid, and no way is it coming off. It has to be soaked off with alcohol.
Those very strong tapes are unfortunately too thick and visible to be used on your hairline if it is exposed to view. For an exposed hairline you can use glue or a thinner tape like Walkers 3-mil thin lace support tape. Those are not as strong, although still pretty strong - say comparable with the industrial sticky tape you get for sticking down carpet tiles. When it is fresh you can't pull it off without hurting your scalp - it needs to be soaked off with alcohol. But after 10 - 14 days wear, or if you get hot and sweaty, it gets weaker - comparable to ordinary sticky tape. It won't come off by itself, but at that point if someone yanked it it would come off. So obviously that is a vulnerability - you don't want anyone horsing around with your system when you are hot and sweaty from the gym. But when you cool down it goes back to full strength.
Rollercoasters are no problem - a lace system doesn't offer any resistance to the wind - the wind can just blow through the hair and the lace base.
I would recommend re-doing the tape every 10-14 days.
Noah
