what is the flat pad at the back of a hull usualy v shaped that you see on some hulls for. it usualy lines up with the cav plate on an outboard.and why do some boats have them and some dont.
thanks Andy
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It usually makes a boat faster.
If the 'pad' is correctly designed for the weight and speed of the boat, the boat skimms the surface of the water without the VEE part pushing into the water.
So there is usually a Vee which then flatens out to a pad. The design of this is critical to get the correct performance & handling.