Does anyone else have a problem with formations and transitions? Small groups I find it very easy but my competition classes a little on the larger side and when doing formations and transitions I feel like I either never have enough space to do anything but 3 lines plus I have a wide variety of dance levels and heights in my classes. Any advice?

You could try level changes or group work. Diamonds and pyramids have good visual effects for performances.

I totally agree with you but sometimes the small groups are just as hard! I like triangles and "staircases"-diagonals of two people side by side like this: works good for partnering different levels and sizes as well.
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it didnt work...those dots are supposed to go in diagonals in sets of two. sorry

The M & M's idea is genius! I can use the colors to specify levels, I'm going to run to the food store today and buy a bag to try this. This would have come in handy last year when I did a 72 person lyrical production!!!