Let´s see...
"Standard Tactics: Spongebob is very optimistic, and despite all the hax he has, he never leads with it unless promped to directly or as a last resort
His usual leading move in his base form is karate, meaning that he will try to use
Martial Arts onto the opponent.
However, if the opposing character is noticeably bigger, Spongebob is more prone to using other of his techniques, as he´s aware his Martial Arts are usually ineffective against such, which include his Jellyfishing Rod and bubbles.
If he has his optional equipment, he is very prone of leading with it, the priority goes like this:
Quickster Suit < Magic Pencil < Magic Book
While he is too stupid to actually use the Magic Book offensively, he knows how to use it, and is far more prone to use it defensively instead.
Bloodlusting him leads into him changing tactics more often if the leading move (still Karate unless against noticeably bigger opponents) is ineffective, which can lead into him using his hax early on after a few attemps. Make no mistake, as the timeframe is more than big enought for someone that actually leads with hax to stomp.
(separate tabber for the invincibubble form)
While Spongebob in this form is quite stronger physically, he now leads more with the bubbles than before (as the name suggests), he may also use the optional equipment accordingly if he has enought time for it (the Magic Pencil is virtually useless in a match as it has very poor range and area of effect, and the Quickster suit obviously can´t be stacked, but the Magic Book is still usable, but still defensively, as stated before
It´s to be noted that Spongebob still has his hax and other abilities in this form, but the strategies for them are still as secondary options (other abilities) or as a last resort (regarding hax) unless promped to.