Scotty those there are watcha call "mudbugs" or crawfish:thumbsup:. I got tired of purging them in a kiddy pool so I threw the strainer together so I could dump out the water without dumping the crayfish..
They are not simply plugs but a length of pvc pipe as long as the loader is wide.. I capped the ends (PVC cap's OD is too big) I cut a large section out of the middle where I store stuff and you can slide the storage tube out to access chain, rope, etc then slide it back in..
I finally found a picture:
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