Robin,
There are a lot of guys here that have it on their rides. I have it on mine(Dynamat and Dynapad), but haven't gotten on the road yet. There are several products that Dynamat puts out, all different thickness and weights. They serve different functions in blocking heat and/or sound. Look them up through Google. A good source is Ebay from someone that is not a bulk seller, but has some leftover from a project. You can get good prices from them as they just want to recoup some of their expenses.
There are some other insulators out there and they are comparable to Dynamat. Some spray on, some paint on.
If you do a search on the forum, you will find their thoughts about it, or them.
Bill