I was trying to work out how to know when my wooden feeling cammed sail was at the optimum angle to the wind & then I remembered the telltales we used to have stuck on the sail for sailing.
I wonder if they would work on a sailboard sail as an additional check ?
Getting back to your original question, there should be no loss of feel with cammed sails other than they are more stable in gusts.
I sail with cammed sails almost all the time and the only disadvantage I find with them is the waterstarting issue, and even that's not a big deal these days.
There is no loss in the ability to feel the wind direction and you don't need to have a GPS to know when you are sailing well. Like others have mentioned, you may not have it rigged correctly.
They can sometimes be difficult when rigged on a mast with the wrong bend curve, which may result in poor rotation of the cams or a leech that is too tight or too loose.
If they are rigged incorrectly you may find them twitchy, but when rigged right are generally smooth.
How is this sail rigged compared to the recommended settings?
I had wondered if telltales were worth trying, but in my case them and the sail would spend most of the time wet, stuck to the sail and useless.... a bit like me after a catapult![]()
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Not sure if telltales are really that necessary when windurfing. The intereface between the sail and the rider, the boom, gives pretty reasonable feedback to changes of wind direction and how the wind is interacting with the sail. Keeping an eye on the telltales would also be difficult unless you used a camera like NotWal suggests.