Originally Posted by
nikehair
I’ve found miles pooling to be quite frustrating. Having to wait 72 hours to join the. 24 hours every time you want to pool miles sometimes causes missed award flights. I get some of the rules, but I can get quite annoying.
Other pooling programs have been abused by mileage brokers or those using pools for activities outside of what UA considers appropriate use. UA's use model lends more to having the miles in place in advance.