Thanks! Seeing this reminds me of one lady Sunfish owner here who strapped a noodle onto the top of her mast.
Here is the MotionX track of the sail you posted MotionX-GPS Maps | MotionX
You would actually need to track the wind direction and speed on the boat. Big boats have have the tech to record windspeed, direction, boat speed, and boat direction, etc, but that is not practical to rig up on a Sunfish. An app would get its wind information (I would think) from sensors somewhere other than your boat, and it will not be representative of what you and your boat experienced.I am still looking for the app that will show my speed along the route overlaid with wind direction.
Good ideas, thanks. Wing design programs are well verified, so I do not doubt the numbers for the current daggerboard and rudder versus my designs. How this relates to actual performance on the water is impossible to say of course. When I was involved (in a very minor way) with the Stars & Stripes 87, we were told they would consider any improvement that individually led to the same effect as not dragging two fingers in the water over the course of an average race. Recreational Sunfish boaters like me will expect a noticeable difference even for an hour on the lake by themselves before wanting to try something new.You would actually need to track the wind direction and speed on the boat. Big boats have have the tech to record windspeed, direction, boat speed, and boat direction, etc, but that is not practical to rig up on a Sunfish. An app would get its wind information (I would think) from sensors somewhere other than your boat, and it will not be representative of what you and your boat experienced.
In general, I don't think that type of tracking is used on sailing dinghies. I know that even Olympic hopefuls are not sailing their Lasers with an onboard anemometer. The best approach for small boats to evaluate and improve boat speed, tuning and overall performance is sailing with another boat. If you can find someone else with a boat identical to yours except for the foils you should be able to learn what you need to. You will want to alternate sailing each boat so you can cancel out the effects of one of you being a better sailor than the other.
Just as an aside, too many reckless speedboats would keep me from sailing a Sunfish on Lake Norman!I looked and saw you are not all that far from Lake Norman north of Charlotte. I believe they sail Sunfish at Lake Norman YC. It would be a good idea to get in touch with them and see if you could drive over with your boat and parts and sail with one of their experienced Sunfish sailors. They could provide some useful advice and perspective while you are in development and before you start production.
i have heard that in the summer one can walk across the lake from boat to boat. It is near Mooresville, center of the US Motorsports industry. Those guys are into powerboats.
Lake Norman is fairly crowded. Our lake is private and does not allow jet skis. The wake boarding boats though are sometimes a nuisance here, but we all get along fairly well. This time of the year I have the lake to myself.Just as an aside that was over 16 years ago. It is much safer now and no one has driven a speedboat on the highway in a couple years.