As anyone who’s studied the subject of where to put your ELT antenna on an RV-8 knows, there ain’t a good place to do it. When the canopy is open, it covers the entire turtle deck, which is where you’d normally mount the antenna, and where the ELT manufacturers want you to mount it. But, you can’t do it. So, where to put it?
Rather than re-hashing the discussion and arguments, I elected to mount mine inside the cabin on a bracket as shown below. Yes, there’s no good ground plane, but as many do, I plan to wear a Personal Locator Beacon (PLB) when flying anyway. I felt like this was the best compromise of all the compromises available.