This is a tip I found out thats really smart to use when your in a tough battle :)
Ok its really easy to use, first you have to have Spectrobes in your party that ALREADY know their special attack (all of them). Then lets say your chalenging the third boss which alot of you are stuck on, (but not me) anyway it takes awhile but if your pacent enough you'll be able to make this attack work :D
So what you have to do is get a spectrobe that your using DURING the battle, and make charge its special attack gage full, but DON'T use it yet! Next take that spectrobe and switch him out with another spectrobe, now repeat the process of charging and switching till all your spectrobes charge attacks are full. Now here's the fun part, finally use all of their charge attacks by using one's then switching until all of their charge attacks are used. Thats a really easy way to get your self out of tough battles :)