I used to do a lattice on my Shire-TB cross. You can see the amount of mane I had to deal with if you look at her pictures in my "barn." The lattice looks like this: http://3.bp.blogspot.com/-xYOdtrCQZy...ttice-mane.JPG
. (not my horse; haven't shown since 2002 and have no digital pictures ).
I found it far easier to do than a running braid, which I was crap at, even though it looks more complicated. These were common with many of the Spanish horses, Arabs, Morgans, Friesians, etc on the dressage circuits a decade or so ago. It was also much easier to do than button braids, which I was also crap at, and more importantly, I didn't have to torture my horse by pulling her mane off.