Did you know you can set the grid display to be not visible by default on a per model basis?
Here's how:
- Go to TOOLS->Options
- Click on the model you wish to edit. EG WHAT, WHICH, etc.
- On the right, scroll up until you see "Grid Settings.
- Click the [+] to expand the grid settings.
- Change the "Visible" value from true to false.
- VIOLA!

NOTE: If you want to set the grid display for all models, you will have to do this for each model.