problem with the pattern is everyone is trying to use the same airspace, much better when diffrent types of plane dont try to share the same air..
the fast ones pattern is a LARGE!!!!! U shape with pases in both directions low over the patch before a big climb at each end.
trainers use the oval
aerobatic planes use a higher shallower U shape with anything goes in the pases
funflys use the S(&%$ZX shape
these planes should not share the same air

as long as you know whats flying already and if your safe to join it you'll be fine