not much help I know. But related to fuel, if you have a rib consider the Sceptor Dinghy Mate tank:

http://www.sceptermarine.com/marine_fuel_tanks/oem/

You can just see it in my picture peeking over the transom. It is molded in a U shape, hangs on the transom underneath the outboard clamp. It is brilliant! In a small dinghy, the gas tank is always kicking around in the way unless it happens to fit under the seat.

Two things that NAs habitually ignore are dodgers and dinghy storage. OK, some of the Norwegian boats do integrate the dodger, but most others do not, and you end up with a monstrosity that looks very much like what it is: an afterthought. Same goes for dinghies. I have discovered that back East, is it common (nearly universal) to tow them, even in poor conditions. In Atlantic Canada this was done much less, as the weather could deteriorate rapidly with no harbor just 15 miles distant. Out west, rarely are dinghies towed, at least, not one you want to keep.

That means the dinghy has to get stored somewhere. If an outboard is involved there is inevitably a Goat Rodeo of the first order getting the outboard off the rail mount (another obvious afterthought) using the halyard or a dedicated outboard crane. Sometimes this involves baptizing the outboard. We watched a case in Salem of baptizing the outboard crane itself: a removable affair, it removed itself and committed suicide in the briny deep. Even though only 10 ft of water, by the time the diver went it it had sunk too far into the mud to find.

Another afterthought solution is davits. Sometimes integrated into a huge industrial structure on the aft end. Davits are not a particularly seaworthy way to carry a 10 foot bathtub on the very back of your boat, but many owners have no choice. So the NA's effort at sweet lines and a nice profile are doubly ruined: afterthought dodger, dinghy cloned onto the back like a tumor.

When was the last pretty brochure for a boat, or nice profile drawing, showing both the dinghy and the dodger in place? They don't draw it because they don't want to admit the existence of either - yet a cruising boat needs both.