As stated, I believe your initial premise is invalid and the data you seek so subjective as to be useless but if you can get a consensus for your arbitrary "sneakyness" scores, more power too you.
An example of how the inherent variables make scoring useless is in one of my active careers I have had
U-19 shadowing a Soviet convoy in the Black Sea in broad daylight and was never detected by the escorting destroyer. Since it's within visual range and I do not use the 16km atmosphere mod, I remained unseen as I attempted to get into an attack position. Eventually worsening weather and the onset of night ended the pursuit but for several hours I operated within visual range of merchants and a destroyer without being sighted. So, in my experiance, your blanket statement:
Quote:
My general comment for GWX would be that daylight stealth factor is too low (Ds spot you at over 20 km)...
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is manifestly inaccurate.
Also having your boat operating at 3 knots and 90 degrees to a target cannot be considered an approach unless the target is for all intents and purposes stopped.
It is well known that use of TC in the SH3-4 series greatly increases your vulnerability to detection so unless testing is conducted in real time any scores will likely be skewed accordingly.
Anyway, good luck getting the scores you want.