Love flying to this event every year.
I think one of the problems is the event is held later in the year than the old PFA rally,s and therefore is more affected by weather.
Yes the Slot system can be a bit of a pain.
Currently set at 2 aircraft a minute i think they could increase this to 3 a minute..Without any real impacts.
Some pilots seem to get to worried about missing their slots, as the website says if your running late don,t worry it just means you may need to spend extra time in the Pitsford Hold.