To endow anything, whether it be a professorship, scholarship, or coaching position, you can assume a 4 percent payout. So for every $100,000 in the endowment, that creats $4,000 in spendable income. Depending on what that position would make, you can then figure out how much is needed to endow that position. Example, if said QB coach is to make $100,000 (nice easy number), and enowment of $2.5 million would be needed. If anyone would be interested in discussing this further, I'll be more than happy to sit down with you. Eric