To this day, I've considered WipEout Pulse the most entertaining game on PSP. I came back to it a week ago after a year's time of "abstinence". So I made some custom grids (16 events each) designed with come-back players in mind to bring them back into the game, getting used to the controls and the feel again.
It is not that much of a challenge, though I could easily modify one of the grids to be such a thing, my point is to allow for a nice practice environment for intermediate players such as myself. Pros have their own methods (seeing Hellfire's Zone vids makes my stomach do barrel rolls beyond Zone 50) and beginners should use the campaign (softer difficulty curve).

However, I have a feeling that the only people that might play Pulse play it on PS2 rather than on PSP. Question is: Might I rather keep my creations for myself, given that's it not really of use?