If you have the room, you can always try putting the probe on its own separate rigger, just pick up something less expensive and keep one rigger only for the probe. I have 4 rigger mounts on my boat, but usually only run two riggers with stackers and keep a third rigger just for the probe. I move the probe rigger up and down looking at water temps to set my rods and usually just keep it 50 down to give me a speed reading.