I had what I thought was an LT heat soak problem for a while. If I drove the car on the street for 30-45 minutes it would need a 10 minute cool down before it would restart it. This was back when the car was still my daily (PITA doesn't begin express the frustration). Turned out my car was just running too hot and the LTs radiated the extra heat to the starter. The ceramic coating, which is what I have, I don't think will make much of a difference in temperature. I had a couple of issues with my cooling system including a crap guage.
Now that the cooling system has been straightened out I havn't had a problem since. I've driven up to 100 miles in the 95 degree heat and the car will fire right up afterwards. And let me tell you I don't "baby" this car at all. lol