Great questions!!
Slip bobbering is my bread and butter. I look for the steepest edges on the rocks adjacent to the deepest surrounding water. These areas are going to be fingers, points and inside turns or “cups” as some people call them. These areas are excellent producers in the evening. Using mapping chips like the Lakemaster 1 foot contour chip will help you find these areas fast. Wind will also be a big factor. If the wind is blowing hard, I fish the top of the rocks or the opposite side the wind is blowing. I will anchor up on the wind side and let my slip bobbers slide across the top and then slide over the opposing edge, if the float makes it that far. Usually you get bit before it gets a chance to blow over the edge.
Casting crankbaits can also be very effective in these same areas.
Don’t hesitate to use slip bobbers if you mark fish deep during the day regardless of weather..
In 1999, I had 7-8 people on my day launch trip. We were headed to 5 mile to drift spinners when I marked a pile of fish on Curlys flat on top in 19 feet. It was sunny and fairly calm. I anchored up and we limited out on slip bobbers. This was from 12-4 pm in July.