I don't know when I'll be able to check back again, so here's what I have in mind:
Each pair can have what HHonors calls a mutual fund. It is a joint account, ostensibly for spouses, but it has been reported that they are primarily interested in you being at the same address. So say the brothers are married, and you should be fine.
You want 5,000 miles in each FF account, to transfer to 10,000 HHonors.
AA and HA transfer. AS and HP don't.
You can earn AA with AA and AS.
You can earn HA with AS and HP.
If you can get 5,000 in at least one FF account per person, you can then transfer each pair of FF accounts into one HH account, for 20,000 HH points in each joint account.
20K will get you one to three free nights at HHonors hotels (Hilton, Doubletree, Embassy Suites, Hampton Inn, or Conrad) depending on the hotel category and if point stretcher is available.
Plus there are a number of ways to earn even more HH points for free (credit cards,
www.MyPoints.com, www.eRewards.com, etc.).
You can find more details in the Hilton forum and at
www.HHonors.com
[This message has been edited by Rut Dog (edited 09-09-2003).]