Our E/30+ has the same configuration. Somehwere in the papers from the PO, there was something from Mars Metal. There was a shoal draft version of the E/30+, but ours, purchased originally on the left coast, was not the shoal version. We are either the 3rd or 4th owners of Spirit & somebody before the PO from whom we purchased it had the modification made, shaving about a foot from the fin & adding the bulb to make up for the lost ballast. We now supposedly draw 4' 9" instead of 5' 10"...the production, shoal version of the E/30+, according to the sales brochure available online (either here or Pacific Seacraft) was only 4'.