I have been using the Viper for the last 7 years, started with steel now use aluminum. I have nevered had the bar get in the way, if the bar is in your way for a shot on a deer under your stand, it is a poor shot choice, just wait for him to take that next step. Both the Cobra and the Viper a great stands, however if you plan on using the stand for gun hunting then the bar makes a nice rest. Additionally, the bar has aided in my successful harvesting of two deer. Both came in behind me, I was able to sit on the bar and lean back with my 4 point safety harness using the tree as camo and comfortably wait them out, one of which took 45 minutes, a long time to remain motionless while standing.

Either way you won't be sorry.