I am pretty new to fishing Alvins but when pulling plugs I have always had better luck switching to gold or especially copper in darker conditions. I think pearl and deep red or purple is also a good choice for darker conditions.
A friend has banged a few fish out there trolling them on the flood tide.
This morning I was actually thinking about fishing doubles again this weekend; a wobbler at the bottom and then sliding out a Maries shrimp scented K13 watermelon as the upper lure. Always worth trying something different if the standard things aren't producing.