I have been doing some reading about OptiCoat 2.0 and have a few questions. This from what I have read is more of a paint protectant coating from what I have read. How hard is this product to apply properly? How long does this sealant actually last? Is it something that you can reapply from time to time, or do you need to top it with something else. These types of products always worry me that if I do something wrong along the way there is no way to straighten it out. Any information would be appreciated.:dunno: