|A mate of mine's 12m cat with kevlar/foam/kevlar hulls rubbed against a large steel mooring buoy. It went through the outer kevlar like a knife through butter, the foam even quicker, but a few hours later had not gone through the unsupported inner skin.

You have sold me on the inner layer of kevlar/aramid. I want reparability and watertightness in adversity.

You said from the beginning to add a layer to the foam side of the inside of the hull, if rocks are a real concern. Seems wise.

Assuming a hull was holed in such a case, reparability should be easy, right? Because the fuzzy kevlar in buried in foam and glass? Its proudness is rendered moot?

|The lightweight solution is kick up boards and glass/polystyrene bows with a substantial bulkhead behind them. This can be angled aft if you want to ride over logs etc when the polystyrene is knocked off.

Tell me stories of knocking off bows.