I like sakuras but on cold signs I find they streak and get all sticky. I also find markals take a lot of pressure just to get a line. Any tips for using markals? also I find that oil pastels from art stores work the best! And they last in weather too.
for Markals, after not using it for a while, a dry film forms on the surface of it, so I usually use a napkin on it like the chalking up a poolstick.