One point to make about you photo, the cleat and track you have on the deck is for the PORT side of the boat, not starboard.
The fairlead is raised at the forward end on each side, they come as a handed pair.
You may know this but !!!
The article will say the tracks will need to go on the side benches?
If your racing the boat it is the only place to put them but they will be under the soft part of the body and cruising people I hear have softer bums than us racing sailors !!
But then when you sit on the side deck they will find your soft side as well so may just as well put them in the best place !!