I can report getting very solid line tension at all points in the pattern, inside, outside, overhead, using reverse-rotation APC 12-6 "F2B" prop. Model is Legacy, a large stunter in 680 inch range. Most electric flyers in NorCal are using reverse rotation, but in the Pacific NW it seems to be conventional rotation. I guess it depends on the model, line diameter, trim, and pilot experience, and maybe prevailing wind characteristics. I will be using the full Igor electronics system on nearly finished China Clipper, so may work best with conventional rotation. We will find out pretty soon. This seems like something that would be a good field test for flyers that really know what they are doing and why one thing works and another doesn't, which I am not one of. Also would be useful to know how rotation direction affects the trimming techniques that have been learned for conventional rotation IC engines over the last 60 years. In-thrust rather than out-thrust? And everything else?