Thanks for the tip michaelmfl. I did see that one but was hoping there was something else more tailored to suit the sporty.I bought a GPS visor on ebay. The back clips remove leaving a flat back surface. I put some self-stick velcro on the back and stuck it to the dash so it's easy to remove. Fits nice. Works very well.
S05 Sun Shade for Universal 5inch 4 3inch Car GPS Navigator | eBay