Arbusers

What do you guys find the most efficient to prolong account longevity?

One one hand we don't want to place these at all as it is essentially donating money to the books - on the other hand they are a necessary tool to keep the account alive.
We need a healthy balance of doing them enough to keep the account looking like a "mug" account without gifting them more than we need.

Do you guys have a percentage of expected profit you would use for these bets?
What type of decoy bets have worked best for you?

Short priced favs in major leagues?
Long multiples?
Virtual bets?
Casino activity?