Standard Staking Procedure?

[jrforman]

If I plan on staking a friend to play in the weekly super tournies on Party and the big weekend tournies, what % of the winnings am I entitled too? Is 50% too much or should it work on a sliding scale depending on how much the winnings are in relation to the entry? For example, should I expect to get 50% of a 140,000 first prize after only putting up $250 or should I max out at 100X the buy-ins or the like? Any input and suggestions would be very helpful. Thanks in advance.