There are a lot of factors that go into whether or not a Tidewater boat will hold its value. Age, condition, and popularity are just a few.
Age: Just like any other asset, as a Tidewater boat gets older, it is likely to be worth less than when it was brand new. This is especially true if the boat hasn't been well-maintained.
Condition: The better shape your Tidewater boat is in, the more likely it is to hold its value (or even increase in value). If your boat has seen better days, it's probably not going to be worth as much as one that's in pristine condition.
Popularity: Some models of Tidewater boats are more popular than others and therefore tend to hold their value better. If you're looking for a model that's going to maintain its value, doing some research on which ones have the best resale value is a good idea.