As mentioned in title i am sure naruto ftg upgrade will help him to fight tobi.I dont think so kakashi can use alot of kamui there is limit for him and so for we have just seen that tobi only got hit by jutsu which r related to dimensions
ur views?
The best strategy I've heard so far is transmitting somebody (Naruto?) to the pocket dimension where he can attack at the same time as the other ninja attack in the "real" dimension. The problem, of course, is that there would be no way to bring him back from that. FTG gives us something of a loop hole that you could send Naruto to the pocket dimension, but he would be able to use FTG to transport back out again. (Minato, by this logic, could have been sucked in to Tobi's dimension and been able to immediately escape again, but he wouldn't have known that and wouldn't have taken the chance).
Another use of FTG, as clearly demonstrated by Minato, is that you can use it to attack at any time from any direction where there is a kunai in mid air (which Kakashi and Gai could spam), including in the brief moments when Tobi rematerializes for a counter-attack.
The problem is that Naruto doesn't know FTG, and nobody currently on the battlefield knows it either to teach it to him. Maybe some of the reinforcements coming might know it, but it will take a while to learn it, even with clones.
MAYBE Kakashi knows it but has never been able to use it himself. He does know Rasengan and might have had the ability to witness Minato's use of it and copy it with his sharingan (or learned it from Minato's old bodyguards or somebody else). But even then, we've seen that people who aren't Minato require three people to use the technique, and Naruto still doesn't have time to learn it.