I use LensCoat on my lens but they kinda bother me because portions of it are always moving around and I have to frequently move them back into position.
Does anyone use Alphaguard? What do you think compared to LensCoat?
I have a Rolanpro on my lens and parts of it shifted around until I placed a small (less than 1") piece of double sided tape between it and the lens. It didn't take much and it hasn't shifted since. Give something like that a try.