Staking Questions????

[BJJIII]

I have a question about getting staked:

Seems to me that getting staked constitutes being loaned money and the lender gets a portion of your action. Or you could get staked for a certain amount of money and when you reach a certain threshold in your bankroll you pay the lender back their loan.(do you pay the original stake plus interest or just the stake?)

What constitutes a good staking agreement?

Some examples:
A. 60% of your action.
B. Being loaned $300 and having to pay back $500 total.
C. Having a certain time period to pay back a loan.

What are the drawbacks?

Should I get staked if I don’t have to but I don’t want to load money up on the sites, and I just want to play at a higher limit?

Also, what happens if you lose the initial stake? Are you still required to pay it back?

Thanks!!