A little info on Holcombe:
The water clarity right now is best described as deeply stained with visibility being limited to about 3 foot unless you are in an area that is recently filled with rain water and has yet to mix. The Jump river end of the lake is slightly clearer than the Chippewa river end of the lake.
There are many unmarked hazards, specifically rock piles and shallows. Nothing that you can't get past with your bow mount, but be careful especially in the area near Hwy 27 and the on the south west portion of the lake.
A excellent map is available at the local bait shops and marinas that was put out by the lake association. I have a Lakemaster chip in my locator, it is not very accurate, if using one, don't trust it for rocks etc as the depth contours are significantly off.
I fished a little this weekend between showers targeting "whatever game fish would bite" using techniques that typically get bass. I did catch several small northern and a muskie but no bass. I saw several boats out that appeared to be pre-fishing the tourney. Didn't see them get any bass either.