I would suggest lite, and just iron really well to make sure the layers are secure
BUT - if you already have the ultra, and are like me - got stuck with 4 packs of the super tough hem kind and had a big order due the next day, try this:
Keep your iron/ironing board nearby so you can do a quick press of the iron where you're about to fold and sew, the heat it makes it soft and pliable just long enough to crease, sew, and wrap
Hope this makes sense!
Here's a pic of some over the top cheer bows custom ordered by a local dance school: