The “stringers” are the “floor joist” of your boat, very similar to the framing under your home. This main framing supports the engine, floor, fuel tank etc. and will last for many, many years with a little care. Let the boat sit outside full of water, exposed to the elements and its life will be cut short.
We talk with many boat owners about the “small” soft spot under their boats carpet who feel it is just a “small” area which will need attention, only to find out the entire floor is rotted and much of the framing (stringers) are rotted as well. Depending on the amount of damage, we can sometimes replace/patch just the damaged areas and re-glass everything back together for a solid boat again. This is much less expensive and time consuming as a full structural restoration.
And how do we determine what should be replaced? Much of this depends on the damage and the value of the boat. Without mentioning any boat brands, if the cost of the repair exceeds the value of the boat, best to find a better boat.
At Ohio Boat Works we rebuild many inboard, direct drive and V-drive boats from builders like Correct Craft, Mastercraft and Century. These boats have lots of history and value, therefore making them worth the restoration investment.