Each of the courses hold's their own Ace Fund. (EXCEPTION-I keep Cliff Drive ace fund with Blue Valley's Ace Fund when we play there)
If you are not a club member, you must pay an extra $1 to be in the ace fund.
All aces hit during league will be 50% of the ace pot. In the event that 2 aces are hit, then yes the pot would evaporate 75% (50% of the pot gone first ace, then 50% of remaining pot=75%) THey are split evenly though so the first ace hit wouldn't get more.
We apply an additional year of club dues from the ace fund. Even if you are paid up through years in advance. (Beckett left here in 2007, and was a member until 2011, then moved back this past year, and had to pay to join the club for the first time in many years) So you can add on to your years of expiration.
The additional $1 from non-members was initially brought up because I was irritated that Eric McCabe came to town and hit our WW Ace fund (which was at like $1800 or $2400....) anyway, I was irritated that an out of towner non-member could take the ace fund. (I like Eric, so this wasn't about him...no scratch that, MOther F'r beating me at the Ice Bowl, the nerve of some world Champ taking my glory!

) This led to much talk on the EC at the time and this was the plan that we got into play.
You can't transfer the "club dues" to another, so yeah we have had a couple of touring pros become members in June as they visit play league, hit an ace, and wham they are a member for the year.
This seemed to be the best scenario at the time and allows us to gain extra income from non-members of the club as well.
Now by being a club member, you get a $1 discount at leagues, which essentially the club is buying your ace fund money every week you play.