Thanks for the guide! After playing this game for so many years, I'm still learning new things (and reminded of old techniques I have forgotten).
I have 1 more tip for forces that is very helpful against Vol Opt's second form, Gal Gryphon and especially the Forest Dragon. It doesn't seem to be well known, either.
GIZONDE SPAM
If your Gizonde is 20+, you can just use it against these bosses. Although the damage on-screen will only display it as hitting the enemy once, you're actually hitting it multiple times. For instance, on the dragon, I believe you can hit it up to 5 times with Gizonde. So, if you're screen is reading 250 damage, you'll actually be doing 1250 damage per cast. If you're Gizonde and MST levels are high enough, you can easily kill the dragon with Gizonde alone before it even lifts off into the air.
Basically, this makes killing the dragon a breeze, especially for low level forces. It works best on the Forest dragons, but it can also work decently well on Vol Opt's second form and Gal Gryphon. If memory serves me right, it doesn't work well on the Ep2 dragon because of his high electrical defense?