Here is my logo for your review; hopefully you are still accepting new ideas. I wanted to give the logo that feel of being a strong, professional brand. And I know you were hoping to illustrate to the feeling of a real divot being hit when you use your mats, so that was my goal with this idea. Hopefully you find the overall crest to have a professional golfer's feel, while also illustrating the realness and quality of your mats.
Also, this would look great as a crest on the bottom corner or back of your mats. Having a standalone crest like this, allows for a lot of versatility in the application of your logo--it will work great on business cards & websites too (for buttons, links, apps, etc.) Not to mention apparel, hats, etc.