in line fuse 56 fig4 a illustrates a controlled depth fishing set up with the present invention installed shown is a fishing rod and reel 34 inserted in a rod holder 32 attached to the watercraft 30 and its fishing line 36 is connected to the fishing line release 26 of the cannonball weight 16 and has a fishing lure 38 secured to the end thereof the cannonball weight 16 has been lowered to a predetermined depth below the water surface 28 by the downrigger cable 18 44 working in concert with a downrigger 10 the trolling direction 40 of the watercraft 30 will be moving away from the cannonball 16 fig5 is a side view illustration of the downrigger cable 44 to underwater probe 46 interconnect method shown is the coated downrigger cable 44 with a section 60 having the coating removed a thimble 64 forms a loop secured by a pair of barrel crimps 62 fig6 is a side view illustration of the downrigger cable 44 to underwater probe 46 interconnect after applying rubberized electrical tape 66 to isolate and seal the connection fig7 is a side view of a downrigger 10 illustrating the pick up coil 52 antenna installation shown is the downrigger cable 44 and extending through the center of the signal pick up coil 52 leading to an antenna cable 54 and secured by a pair of plastic tie wraps 68 a cable connector 70 is disposed on the distal end of the.