If you got the game images you can create new sets using the tools/files hosted at the Hoot website. Feel free to contribute the resulting sets, I'm sure other appreciate it as well.
There's some Neo Geo sets not included in the actual XML: Windjammers, Karnov's Revenge, Puzzle Bobble 2... Maybe some others too.
I have tried to make Windjammers playable following how others roms looks and by comparing with M1 frontend XML, but with no real idea about how I'm doing... This is how I done:
First, I have rename M1 and VX bin files extensions to M1 and VX respectively.
Of course, tracks codes and names are just random, cause I don't know where is each file, and adding all codes possible I could if Hoot load the whole thing.
Unfortunatly, all I get is this error message: Description file load error.
Someone could help me with knowledge could show me what I have done wrong? Thanks