Final Form

[SeeDRankLou]

Your way is a good one, and if it works for you you should stick with it. Here's the best way I've found to level up final form.

Equip Bond of Flame, Oathkeeper, and Fire Boost. Put Firaga on one of your shortcuts.
Go to the Twilight's View save point in The World That Never Was (I think that's what it's called, it's the third available save point). Go past the room with the Snipers and to the next room (Naught's something). It's one of those stairway areas, and it has three places where nobodies attack. Right by the door (Samurais and Creepers), up the first set of stairs (Creepers), and at the top (Berserkers and Samurais). Go up to the second area where nobodies attack and enter final form, you will be attacked by a bunch of Creepers. There are at least 25, and they are all easily dispatched with a firaga, and you can usually get two or three with a single firaga. Even with just three bars, you can probably kill most of them in this fashion by the time you are down to one drive bar. When you are down to one drive bar, make a run for the save point in Twilight's View (glide through the Sniper room, there's time), and exit the world. You'll be done in no time.

Also, if you miss exiting the world quickly enough, just go to the Underdrome and enter a tournament and immediatley quit, your drive gauge will max out.