Yeah 3 is a lot when you think about it. 2 would be more than enough as well. But the beauty of it is that at least people aren't just going to be riding the buffer constantly (dipping under for 1.5 seconds then speeding back up to reset, rinse and repeat) because that would just be tedious, and not to mention risky. So this would really only be helpful where it is intended. A little beeping sound should be playing while the buffer is in effect.