how many Holes to bilge pump?

[Alex]

Hello all.I recently repaired my transom with new wood.The previous owner had ripped out to big chunks of the fiberglass covering on each side where the water sits to be sucked out by the drain hole when docked or the bilge pump.My boat is the outboard type and I do have the big plastic cooler thing or fish holder box in the floor.It looks like when this storage box drains its water it goes straight back to the bilge area-their is one hole in the center of the floor.My question is do I need to drill a hole on each rear end side of the inner bilge area or is their only 1 drain hole in the center leading to the bilge area.My boat is a 19-6 wellcraft sunhatch!!-Thanks in advance