It can be used for anything...keeps the dog in shape!
We started using the peanut in early Dec, and then we took almost a month off because of vacation/holidays. Just got back into it this week. Introducing the dog to the equipment and getting the dog to move on the peanut is where we are at. We've been doing the other stuff, but the peanut is fairly new. We're using canned squirt cheese as the reward~very high value right now!
We do a half hour session of this stuff after working on jumps/retrieves/heeling/send out and long recalls.
It doesn't look like strenuous exercise compared to the above, but is intense as it works the mind as much as the body.