We operate on a basis of trust with our door-sitters and the mix of adult/youth varies during the year in unsurprising ways -- we just don't feel like we need to capture that information.4. Any system can be compromised by crooked door-sitter. They can wink at their friends and wave them in for no fee. They could pocket some money and not click the tally counter or put a tick-mark on the paper. Anything!