I see you have lots of new gear, any chance you have a camera also. You can drill a series of holes in a line and drop the camera down and look around. If you don't have a camera try the same with your fish finder. Drill at least a half dozen holes 20 yds aparts and then go back to check depth and look for fish. Before you do anything, ask the person that gave you permission if they ever ice fished it and ask about depth, structures and species. Good luck, new water is always hit and miss.