roger 4400
Calculate the speed of the tractor moving forward and the rotation time for the flip to happen. I've found that moving slow and steady, that the flip can't happen in less than a second. Moving fast forward however, is not a good idea. Carrying counterweight as FEL with added
ballast in the bucket (although I usually work in the woods with the forks on the FEL)
I don't discount the fact that catching the log on an object as mentioned will cause the front end to raise. Awareness of those objects in the path is extremely important. As with anything, one can't just get on the tractor and "go". Things break and happen quickly. But have always had time to get off the hydro forward pedal, or put in the clutch, or dropped the 3 ph in plenty of time.
The OP wanted to raise the log when pulling and the risks of doing that all need to be considered. The added cost of a logging winch such as the Farmi were not in the cards for the OP.