On my last boat I removed a 5", I wanted to build a small 'glove box' in there to store my phone. You might consider building something for small item/dry storage, and mounting it in the hole.
2015 Skeeter FX 21
...and down goes PhotoBucket with the new Terms of Service... I predict they will be out of business or begging for forgiveness inside a month. 6/30/2017