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I like a 7. its big enough so your transducer float dont take up half the hole but small enough bigger crappies and gills cant get turned around in the hole.
GOT ME A 10 INC GAS DRILL TODAY FROM BASS PRO I WANT A 6 INC BUT THEY DID'T HAVE ANY LEFT
Yea, well I've seen big thing go in small holes, so there:) hope your fishing is good today!