<font color=blue>if you are going to push a dead/small tree down, for example. Also, the teeth can be used to hang a chain on for lifting something...if you don't have bucket hooks.</font color=blue>
I don't have a toothbar, I have individual teeth that bolt on the bucket using 2 bolts per tooth. I periodically take the teeth off or put them back on, depending on what I'm doing...
If I'm moving dirt and am on latter stages of it, I'll take teeth off so that I can backdrag. Backdragging with the edge of bucket is only way I can get it relatively smooth. I tried it with the teeth on and it looked like I was getting ready to plant beans in the furrows that the teeth left behind. I've tried with the heel of the bucket and that leaves a bit to be desired. (what really leaves a bit desired is operator expertise /w3tcompact/icons/laugh.gif )
As far as tree pushing, I love having the teeth ON the bucket to help prevent the bucket sliding on the tree (side to side) as I push. The teeth will help act as a "corner", or box in the tree so that the primary force is the tree going forward, and not let the bucket slide off
I too, think the bucket digs much easier with the teeth on, I like them to plant into ground when I'm using backhoe, I will on occasion use them to hook chain (but I have a hook). In fact, just last week, I dragged an uprooted oak tree out of woods. Tree was probably 80 feet long/tall, though only maybe 20 inches in diamater for most of length. Given slope of hill I was on (my puckerer was starting to quiver /w3tcompact/icons/eyes.gif /w3tcompact/icons/eyes.gif) when i got to tree, I didn't trust, slope, hook, other... soooooo, I chained tree, and wrapped the chain around my bucket twice rather than "hook" it onto the bucket. This way, as I traversed back down the slope in reverse, (and maybe hit the brakes) i didn't need to worry as much about the front end rearing up on me, nor "losing my load" (no pun intended with above mention of quivering puckerer /w3tcompact/icons/blush.gif /w3tcompact/icons/laugh.gif ). Yes, I'll fess up, the slope was steep enough that the front wheels were a little light in the tubes and I used my steering brakes to help. Took me 3 hours from start to finish to move this tree maybe 1/4 mile and most of that was figuring out how to traverse the hill.