Driver,
My tooth bar is almost always on. I'm forever digging up a bolder here, up rooting a tree there, etc. When I get a load of crush and run deliver, or I'm doing some grading work, I take the tooth bar off. It attaches with two large bolts through the side of the bucket. To get it on or off takes maybe 4 minutes. The sucker is heavy though. Be careful not to loose your grip.
The tooth bar is kind of like the canopy. I had neither on my last tractor. Didn't ever miss it. Now that I have both, I'll never have another tractor without either.
Hope this answers your question.
Bill Cook