No problem Brian, you're welcome.

On stab thickness, I've used as small a thickness as 5/8" at the high point and as large as what I have now in my current ride, Aesthesis, which is 1 1/4" thick at the high point. There was nothing wrong with the 5/8 thickness (6 1/2%) at the root and the same % at the tip. The current model with the thicker stab has 11% section. My newest, Delta in in between. Of the 3 I like Temptress' 6 1/2% and Delta's 8% better than Aesthesis' 11%. Pitch response is crisper.....Not 100% sure it is only foil doing that tho...

The contra demands gobs of yaw stability. Your vertical tail volume coefficient probably needs to be around 1.4 to avoid most of the appendages folks have resorted to. Increased fin span I think is the key. Also, bringing the canopy aft helps

The current crop of planes have vertical TVC's of around 1.2 give or take

CG versus high point....don't have enough data on that one to make a judgement. I have some foam cut to a similar exponential curve I mentioned earlier, except the high point is at 25%. One of these days I need to complete the experiment and see what difference if any, exists. The CG is a function of moments, planforms and areas, that's it

Flying stabs make alot of sense in aerobatic models for extreme aerobatics. Unfortunately we've had a few early botched attempts so folks are reluctant to try them again. The biggest drawback is balance weight so far back on the model. And getting the pivot located right which dictates how much balance weight is needed. Some of these issues could be reduced with judicious actuation point. The actuation could use a moment arm away from the pivot

Hopefully that makes sense...it's late and i need to go nanni