I "fabricated" mine a couple of years ago. I just put it back on the boat after going TM mount for a 18mos to force myself to figure out boat control. The main component was an Andantex 90° 2 output gear box. I sandwiched it between a couple of short pieces of aluminum angle to create a base for it. I oriented the gearbox so that the rotation of the 90° input shaft clockwise turned the upward and downward pointing shafts clockwise when looking down on the gearbox. I used an old adjustable aluminum tent pole for a steering rod. At its bottom end, I affixed a black nylon star-handle. At the ridge tab end, I cut the tip off and crimped on a small piece of the upward pointing shaft from the gear box. I connected the steering rod to the gearbox using a 3/8" universal joint shaft coupler. I attached a 3/8" flange coupler mounted to a 5" aluminum plate disk to upper output shaft as a directional indicator. I drilled and tapped set screw hole in a 3/8" to 1" stand-off spacer so I could mount it to the bottom output shaft. I slipped a 36" L x 1.25"OD x 1"ID carbon fiber tube over the stand-off. I clamped it with a 2-piece clamping collar. Flush to the bottom end of the tube, I epoxied and inserted about 4" of 1" HDPE solid rod. I marked the fiber tube for the retaining pin used by the Summit LS mount adapter. Beneath the base created from aluminum angle I affixed a pair of 112-LB Neodymium countersunk cup magnets. I installed their matching striker plates on an aluminum bracket on my bow. The magnets hold it securely enough to troll at reasonable speed but, will act as a break-away mount should the transducer and pole encounter an obstacle while the boat is moving. I set up an extra striker plate to securely stow the transducer pole. It's quick to deploy and stow. Very intuitive to use and easily tracks crappie even on the move or when the boat swings. I hope this helps someone with their own.