10 feet ehh ?
This is what I would give a shot.
Make a basic 3 chines hulls from flat panels with curved sides. Each two opposing panels are mirror image from eachother. Should get a nice shallow V keel line so the boat may plane down wind. Stuff the keel with foam to give it positive floatation and may get an open stern that will shed water.
Put a lugger rig on it. Such a rig can easily be done without stays as you don't need alot of mainsheet tension to keep the leech tight (=pointing). Luff tension and kicking strap is also already taken care of by the basic lugger design. The mast, boom and top spar are not highly loaded (as there is very little mainsheet tension) and you don't need an impressive mainsheet block setup. 2:1 or 3:1 is more then enough. Additionally with a large top spar you can really get same decent sail area on that boat with a low centre of effort which would make you go fast. And the sail will behave alot like a square top sail but will not need any battens and the sail itself is very easy to shape using maybe 2 or 3 broad seams. Their no real high stress points in the sail and that removes the need for many sail reinforcements. When you know the right shape and place of the broad seams then you should be able to make this sail from any stiff section of cloth within 1 or 2 hours.
The sail shape will be very good on one tack, and a little less so on they other because of the propertie that the lugger sail is to one side of the mast, hence the name lugger sail. For longer stretches the crews used "to lug" the sail around the mast to gain some additional efficiency on the "off-tack". But despite this single drawback the lugger sail is very efficient on average even when not lugged around and increadibally simple to build. For example their are no goose necks, sail tracks, luff pockets or fancy sail shaping techniques. At a time the lugger rig were banned for small boats by law some centuries ago in European countries as they tended to be used by smugler and with it it they could outrun and outpoint the much larger navy ships that were still largely square rigged. Only with the advent of the large sloops could the Navy catch these small smugler vessels (often less then 20 feet). Also the lugger rig is very quick to hoist and lower (incl. the mast) and the smugler vessels could transform themselves from an easily visible boat with a sail into a rowing skiff without a mast that could easily hide among rock formations or just lay flat on the water. Again the sail area on a lugger rig is relatively large so these small boats could get very good speed in addition to having good pointing ability
The lugger rig is a rig with a bad name that it doesn't deserve. It is a very intriquing rig with some very strong advantages.
http://en.wikipedia.org/wiki/LuggerGo for the type with a boom. And don't go for one of the types that try to mimic the Bermuda rig. go to the wikipedia page above and look at the first picture of the boat Reaper. Get the rig that is front and at a full length boom on the bottom of the sail. Don't get the one on the rear as that has negated some of the construction and aerodynamic advantages by trying to be more like a gaff rig.
Good luck !
Wouter
