Foam grips seem to be quite good for trials, my buddy runs them and doesent seem to have many problems with them, although if your a sweaty bugger you might not want to run them, it'd be like glueing on sponges On the other hand, being a bmxer, i have to say that the amount of quality rubber grips out there really is quite shocking. There are so many of them, which are.. A) Long lasting B ) Available in many different thicknesses, lengths, etc. C) Cheap. Or cheap enough. I would put in one of those "Do what you want" kind of quotes, but you came here for advice, so i gave it. Cya.