In the normal game a FB would help a lot as it's an extra blocker for your main runner. At this moment in time i have not seen anything that will tell you whether you are better having one or not.

The only real way to tell is to try it with and without. I recently played a game against my league leading team without a FB but with 1 HB/R and 1 HB/L and I won 27-0.

If you do put one in then make sure he has key skills in place. EG blocking and strength.

Anytime you want a friendly gimme a shout.

I personally haven't seen any difference. I used to run a wishbone and was fairly successful with that, now I run a pro set with no FB and am fairly successful with that. May be the formations I've used, but I saw no real difference with and without the FB.

But I agree that you should play some with and some without and see what you're most successful with. Just make sure not to try one against bots and the other against humans or your results will be skewed.

I have tried both 2 TE and a FB, and my running game seems to have been more effective with the FB. This is purely anecdotal evidence, though, and I'm sure someone else has had the opposite experience.