Ok, so nollie tres may seem like a really fucking hard trick but in reality with a little practice and some tips you can learn them in like an hour.
1. Your finger positioning can be what you deem comfortable but personally I like mine like this:
2. Now, instead of trying right away to flip the board like a nollie, try to get the rotation down in SWITCH instead. This makes it a million times easier to learn instead of just in nollie position. To get the rotation you mostly want to push down and scoop with your front finger and pop up and separate your fingers kinda like a nollie flip but further apart.
3. Don't try to land right away. Spend as much time as you like getting just the rotation down. Don't focus on the board even landing griptape side up. Just get the proper rotation.
4. Then once you can get the rotation, try to land in SWITCH. Don't try for nollie yet. Switch is much easier and nollie is basically the same thing just the opposite direction.
5. Once you can land in switch, go for the full nollie tre. It may be hard to get it to rotate all the way at first but it's easy once you keep at it and practice it.
6. You should now be able to land high, long, and clean nollie tres. For me my nollie tres are not low as I'm popping with my fingers closer together. They are nice and visible too as the flips seem a bit slower, which looks a lot better too.
Hope this helps. Tell me your feedback