mid-ship storage box

[aldo]

The mid-ship storage box drain on my 23 has a drain in the rear but always collects water in the front. I'm thinking of drilling a 1" hole and installing a brass flange for drainage.
Has anyone tried this?
How much clearance is there between the bottom of the box and the keel? Or is the box fiber glassed to the keel? Any other things I should be concerned about by doing this? Thanks.