I just finished my first 2 homebrews following buckshots tutorial. s40 fast hack , yetti board, .9 wide angle fresnel, in a wally case. I tested them and they work in my yard, now they are in the woods=]. I was looking at the info on the .9 wide angle fresnels on frenseltech.com and was wondering if I put them in upside down or if it matters. I did use the side with 9 dots smooth side out, but does it matter if the other side ,10 dots, is on the top or bottom. I ask because I am going to try to build my next one with a curved frensel like i saw in another post and other pictures i see have in oppsite of mine, 10 dots on the bottom. Ill post pics of the cams and of the pics they took soon. Thanks again for all the great info. Now I have another hobby.