Yes this is a common issue. The most effective way is to pull the dipstick and leave it out for at least 30 minutes. Wipe it off REALLY good, push it in and pull it out, then hold it near a light and you should see the shiny area pretty easily. I like the idea of laying it down on a paper towel to see where it gets wet, but you need to be careful not to move the stick around too much or it will get confusing where the oil level is.
I know you are meticulous about maintaining a FULL reading but really, if you're not pushing the truck hard, it only needs to read between the ADD and FULL marks -- this is called the "safe zone" by most manufacturers, for a reason.
If you are towing, hauling, crawling/wheeling, or other severe service, then it would be best to maintain the level at or near the FULL mark.