My nose mannies are just dialed. I don't practice them, I'm lucky if I can get 10 feet on flat. I just do them, its all willpower. Just practice and find your way. Going fast helps with distance.
hang fives I put just my toes on the folding mech. nose manuals I put my front foot toward the front of the deck, toes touching the foldy and back foot like wherever.
There was definitely already a thread about this made a while ago, but whatever.
As for the way I do hang fives, I pretty much keep my feet in the same position for every trick I do, which is towards the back of the deck, kinda ski style with the heel on my back foot hanging over the brake.