damn, what a dumb skill to have then. not only do you lose DPS, you have to give up points on polearm... sigh, and here i put 12 points into it ._.
should not negatively effect your DPS at all. FYI at *this* version "Final Attack" is worthless and lower your DPS.. so stay away from it
Final attack is only a DPS gain (I think) on single target with power strike. If you slash blast and trigger FA and hit like 5 monsters, it's much weaker than slash blast is because instead of hitting every monster for X% damage, you're hitting each for 1/5 or whatnot. If that makes sense. Since mobbing is the key to leveling pre-3rd job, it's advised against.