If you're interested in competition, you will have to learn them in both directions anyway. Practice is the key here.. Smart practice. Build into it.. don't go out and try to do a full 4 roll circle if you're having trouble with the 1st roll. Just do the 1st 90 degrees w/1 roll until that's smooth.. then add the next roll.

Once you're happy with a 4 roll circle in one direction.. do it again in the other direction.. then change the roll direction from inside to outside (or vice versa).

Then start reducing the number of rolls.. :-)

In all cases.. the slower you can roll the better, since you can watch what the airplane is doing easier. I tend to make circles as big as I can stand.

-Doug