Hi guys sorry about the newbie question, I'm about to purchase my first pick up truck ever

So my first thought is obviously how do I load my kayak?
Let me give you more information, I want to use one of these Thule saddle kits:

The truck bed is about 60 inches long, and it's got duraliner even on the top edge. So my plan was just to lay the kayak (a Revo 13) on the edge of the bed (top of tail gate) and slide it on the duraliner until I reach the saddles.
So my question is this, will the duraliner damage the kayak ? what about the other way around? How difficult would this be for a skinny individual?
The reason I ask is because I saw a video of a guy that make a contraption with some rollers that he places over the tail gate, and got me thinking " wow this most be more difficult than I though"
Anyway , sorry for the long post and thank you in advance for your help.
Dan