Xducer finessing. You always need a bigger hammer.

Installing marine electronics on boats requires tools and gear. I have lots of this stuff. So much that often the problem is in locating where things are in the beast truck. Ethernet cable testers, several soldering irons of varying wattage's, a fox and hound for chasing wires, volt and clamp on meters, specialized crimpers, outlet testers and much more high tech gear. Most are rarely used or needed on a daily basis. To deal with many boats you have to throw away the finesse, and use things more commonly wielded by stone masons, or needed by railroad track repair crews. The boat often won't give up its gear until substantial brute force is applied.

Knocked up

This is a common sight in many marinas. The "Steel Forks" of the lift snatch your boat out of the water, and place it onto a storage rack, or the ilk. The forks always end up generally in the same place, sort of, and that is the outboard edges of the hull, give or take. Running these machines takes practice, hopefully not too much on your boat, and a lot of skill. There are always signs around dry storage marinas that say something to the tune of, "Make sure your antennas are lowered, and the trim tabs are all the way up." Loosely translated, this means it ain't our fault if you end up with broken, or bent stuff on your boat, or any of the other possible variants such as "Tell it to the judge", "We told you so", and my favorite, "What, you can't read? So given the fact that these huge metal hydraulically operated prongs are going to snatch your boat from its undersides, why would you mount your transducer where the forks can knock them up?