It's best to use the add xp option and change the amount as the amount needed scales. I found 500, 1000, 2000 and 5000 are great ways of doing it. There are so many things that give you xp so doing this you can level up like crazy within 20 minutes. Just don't go over the required amount for a level.
as far as i know, its used when u hold W at ship. if u dont use it u run out of stamina on the ship and they stop up. f4 let u hold the speed up at all time. buti might be wrong since i dont use it
i thought that was page up
Our most recent trainers using the b/w user interface have fully customizable hotkeys. Left click on the key shown in the Keyboard Hotkeys tab in the trainer and select the key you like to use for it.