I have an Atlas hydraulic jackplate, along with my 2010 250 HO. What is the proper procedure for trimming the jackplate?

Do you:

Start with it all the way down for the hole shot,

Trim the outboard to get on plane,

Then trim up the jackplate a bit?

Are you just looking for max speed, handling, or a certain rpm range? Or is there an inch measurement under the hull to take note of in the garage?

I guess what I'm asking is, what indicates that I am at optimum trim level with the hydraulic jackplate?