Generally speaking, divide my fleet up into two broad groups; broadsides and attack.
Attack obviously being carriers, beam ships, echos and so forth, Broadsides is everything else.
Generally speaking, there are three main types of maneuvers I use for broadside battlegroups.
>U curve
Come in at an angle on one of the sides of the board, head towards the center, and hook a course change to reflect direction; attack at an angle on approach, and then shoot from the back and also plink away at their back line.
Alternately, come in at an angle from the center and hook a course change at one of the board edges, depending on where the enemy is deployed.
This can turn into a "C curve", where if there's time, need or opportunity to do so, the broadsides will turn back towards my board edge.
>V curve
Basically the same as a U curve, except you start at one of the sides at an angle and go all the way to the other side, before reversing a direction. Better if enemy ships are more evenly spread across the front, and it can always be made into a U curve if need be.
>S curve
Same as a U curve, except I start at one of the sides, curve up straight through the center, and then curve off again to the opposite side instead of reflecting the angle. Can be easily entered from a U or V curve, and can likewise hook around like a C curve back towards your edge of the table.
Basically, you want to deploy your front firing and non-combat ships first, hopefully forcing the enemy to deploy the bulk of their fleet, at which point you can deploy your broadside ships in a way that allows you to hit the most enemy ships the longest.
This is also why you want to consolidate as many of your broadsides as you can into just one or two battlegroups, and make the remaining four battlegroups all your carriers, troop ships, corvettes, and battleships.