With the wiring (GPS, tranducer, and power) coming through the oak-veneered plywood that supports the bridgedeck, like  this: This teak stuff was getting fun. Next project was a traveler to replace the Com-Pac end-boom sheeting mess. The 1x4 piece  of teak had to be curved on the bottom and on the front to sit as low as possible. The whole unit attached to the boom  gallows with a pair of stainless steel U-bolts, like this: 43