I've been designing sequences for a few years now and one of my signatures is just as Dick has described.......I start out with a basic pattern without any rolls or snaps. Once I'm satisfied with the flow and balance of the basic sequence of manuevers, I then add the snaps and rolls legal for each class until I've reached the total K value that I've targeted. You can create nearly identical sequences from Sportsman thru Unlimited that progressively increase in difficulty level. In my opinion it makes judging easier.
You can create sequences that are challenging to every skill level without being impossible to judge. ....... and from most of the feed-back I've gotten after a contest, they can be FUN to fly as well.
If anyones interested, I recently wrote a "how-to" article which is posted on the IMAC website that goes into more detail on my method.

Larry Lutton
[email protected]
[email protected]