If you can understand the other side's case, don't bother with a strike out application.

Strike out applications pursuant to Order 23 have historically been made for strategic reasons, but that is changing. They should now only be made if a pleading or case cannot be understood.

The full article (2000 words) covers:

the difference between strike out and dismissal
the difference between strike out and summary judgment
strike out applications in the Supreme Court and the relevant rules
strike out applications in the County Court and the relevant rules
addressing poorly drafted or ambiguous pleadings
strategic requests for further and better particulars
bringing an application by summons
strike out applications in VCAT and the relevant rules
mistakes to avoid