My stringers were bedded the entire length with thickened poly. Meanining its bedded with even pressure thru the entirety of the length of the hull. You can't cut wood stringers perfect ,so if you cut the stringers a layed them in place on the surface of the hull one part of the stringer would touch the hull surface before another part of the stringer creating a head spot. In the case of a pourable system such as ARjay you are dealing with consistent even pressure thru the length of the hull.
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