Yeh, as you've discovered the mass is extremely important with regards to friction. An object with even an infinite amount of friction will not behave as such if the object has very little or no mass, the two are closely related. You should find that increasing the mass (without increasing the friction) will have a similar effect to increasing the friction (but not the mass), but on a different scale.
Please post you're findings Shifty, I'm sure it will be very useful and interesting information ;)
Please post you're findings Shifty, I'm sure it will be very useful and interesting information ;)