I ran a Shimano mooching reel for a season on my dowmrigger rod. (Shimano Convergence Rod). Worked ok, but it's direct 1/1 ratio became a real pain when trying to get a fish in. (For every crank of the handle you only take in about a foot of line maybe.

I went back to using a conventional round reel. The Penn Squall lever drag is a really good salt water reel. It will handle the biggest Kings and the lever drag system is very easy to use. It allows you to instantly adjust the drag throughout the fight.

Use the moocher reel for jigging and mooching!

My 2 cents worth.
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"Forgiveness is between them and God. My job is to arrange the meeting."

1Sgt U.S. Army (Ret)