Snitches Get Stitches
No matter what, don't rat out a fellow member of the club, regardless of what kind of unsavory business with which they're involved. It's not uncommon for Hells Angels to get arrested and questioned by authorities. If one club member rats out another club member, the rat might not make it home.
Harleys Only
Hells Angels are a motorcycle club, so it's not exactly shocking that members need to own a bike—but not just any bike will do. It's a tradition for members to ride a Harley Davidson. However, some other makes are acceptable, such as Buell, which is owned by Harley Davidson. If you show up with a bike that wasn't made in America, you're going to get sent home.