We used Hypafix too and got it on Amazon.
The other thing that helped were Feeding Friends stickers. You get them here:
http://www.kidshopechest.com/feeding-friends-stickers.aspx
They're kind of babyish but for whatever reason, they worked best on my daughter's skin (and if he's just using them at night, well, no one has to know). They used them when she was in the hospital, which is how we found out about them. She initially used them just at night with the NG tube. When she switched to a NJ tube and had to have it in all the time, she only used them sometimes and would only use certain ones that she thought were less babyish
.
The other tape we tried that worked is HY tape. We got that on Amazon.
Tegaderm and Duoderm caused a very red, itchy face for her and they actually had to give her Benadryl in the hospital for it.
There is also No Sting which is what you put on to prep the skin. That protects the skin - it's like a little alcohol swab you rub over the area. Our homecare company (we used Chop homecare) gave it to us.
I wish I had advice about the tube bending but that happens to us too - 1.5 years later! M has an IV pole which we keep close to her bed and we hang the backpack off of it - that way, if she has to go to the bathroom at night, she can just grab the backpack and not take the whole IV pole.
There are "line tamers" you can get online - I'm not sure if they work. There are some suggestions here about household stuff to keep the line straight:
http://www.feedingtubeawareness.org/overnight-feeds/
Honestly, we have never tried these things. M used to wake up when the pump alarmed and fix whatever was wrong and go right back to sleep. Now she has gotten so used to hearing the pump, she sleeps through it. I sometimes sleep right through it too! Apparently, that is quite common in teenagers - they just get used to the sound.
It hasn't been a huge issue for us - it happens about once a week. Wish I had better suggestions.
Good luck!
**Edited to add: Sorry, didn't see the that you had already tried No Sting:ybatty:!