I wish I had a digital camera!
My newest tow hook is on the S&S F-86. I took a hunk of aluminum and milled out everything that did not look like a towhook. Afterall, this is a 7-1/4 pound beast and I use about 45# of pull on the bungee so I just couldn't use a wimpy hook! Then I epoxied a sheet of carbon fiber plate to the inside of the fuselage. The thing is attached with a countersunk 3mm FH machine screw in the back and an angled and countersunk 4-40 cap screw in the front. I'm sure someone will photograph it at the MWE and post it here (huh Gregg??