Do I need a new bailer?

Hi all,
I’m nearing the end of my fiberglass patching (ugly but floats?) and want to go out on the lake.

This bailer had sand underneath and I removed as much as I could find, then tightened up to this. I had tried to remove it completely, but I gave up when that seemed wrong. It doesn’t look good to me. I’ve read about using silicone and marine sealant. Mine doesn’t sit flush. Thoughts?

Obviously, if I’m tackling fiberglass, the bailer shouldn’t daunt me, but it does. Especially since...

Do I need a new bailer?