Dialing In A Carolina Rig

Past 2 outings I've been throwing a Carolina Rig as the wind has been pretty heavy which made throwing other stuff difficult.

Tuesday I boated 1 fish and Yesterday I boated 2 (one of em came from the exact location I caught the one on Tuesday.)

I don't have electronics on my boat and I'm trying to find the best areas to concentrate throwing this rig.

So far I've gotten into:

Areas with nasty bright green algae (snot)

Areas where i pulled up nothing but heavy strands of Milfoil

Some areas have been totally barren and when i pull up anchor all i see is muddy water.

Does bottom composition matter when throwing a C Rig?

What should I be looking for when throwing this rig...

Like the snot grass...is that stuff known to hold fish, or should I just bypass it when I find it.

Also...When I'm getting into Milfoil, the wieght gets super heavy...should I continue my retrieve or will the Milfoil hinder the feel of a strike and potential hinder the hookset?

I just don't want to spend a lot of time covering water that is known to be unproductive.