Came here to post this only to find the most recent post also fished MDR not long ago ALSO primarily with an underspin. Cheers!
Missed a ton on a jig, but hooked up with a few spotties and a couple of short halis on the underspin paired with a Mann's hardnosed jerkbait. Enjoy.
https://www.youtube.com/watch?v=iATzcrbBt20