I've used this plug and receptacle on many boats many times. It has always proved reliable and, when mounted properly, the receptacle is very aesthetically pleasing. Both the plug and receptacle are well made. I've never worn one of these sets out, but the longest I've ever used a set continuously was five years. After five years of heavy use both the plug and receptacle seemed as solid as when they were new. It is also worth nothing that these are great for other uses where you may need a low-voltage plug to provide power to a device, such as for an inverter or a spot light. I've even used them to plug in removable solar panels for charging. I give this product a five star rating because I've used it many times, and even for applications outside of its intended purpose, and it has never failed to meet or exceed my expectations for functionality and durability. My only gripe is the three holes in the plug's cover where the wires pass through. I wish you could get this in a single-hole option as I occasionally use multi-strand cables with it, but it's no biggie. As it is intended for a trolling motor the cover is actually well designed.