I have the EZ Checker, but rarely use it. I use the Golden Rule, because that's what the KDFWR officers use. I just wish it was marked at the 9" length. I measured back from the 10" line and scratched a line at 9" (and marked that line with a Sharpie). I re-mark the line every so often, and after every time the board gets a good cleaning. EVEN SO ... the fish better be closer to the 10" line than the 9" line, or it's going back in the lake. And on those lakes with a 10" size limit, it'd better be an obvious 10.5" fish or it's going back, too.