Contrary to the views of many, 5200 does not last "forever". When my 1954 Hinckley went through a thorough rebuild in 1981, we were told by the "experts" that it would outlive the boat.
By 2000 the product was breaking down in almost every place it had been applied. It is a great product but does not last "forever". In many cases, bedding compound is a better choice.
5200 is the industry standard for structural bonding. pretty awesome strength and has good durability. Have to be careful with it though -- It is not something to fool around with.
I have used 5200 for a number of applications over the years. It is one of the best products that has ever been created. Just remember: once you put it on something, it's never coming off.