I don't know if this will work with Monokote because Monokote is a HIGH HEAT film. I know it works with low heat films and Ultracote.

First, cut your covering into strips that are about 1/4 the width of the filet and a couple of inches longer than the filet.

Next, apply a coat of SIG's "StixIT" to the filets and let dry.

Now, USING A TRIM IRON WITH A ROUNDED SHOE, iron your strips on going from the back of the filet to the front. You want to start with the strip on the outermost part of the filet and work your way towards the fuselage. I recommend using a high heat on the film even though it is a medium of low temp film. You will need the heat to get the film to stretch into the assorted concave areas. Overlap your strips about 3/8".

The StixIT WILL HOLD the covering inplace and the covering will not come loose without applying heat to it.

Depending on the degree of detail you want to go to, you can get some latex paint color matched to the film and paint the filets, then after the latex has cured, clear coat the paint to fuel proof it. If you decide to go this route, cover the plane, then mask off the filet area prior to painting and clear coating so that the heat from the iron/gun does not damage the paint.

For filet material, I make a base/frame from 1/16" sheet balsa, then mix up some auto body filler (Bondo) with microballoons (mix the micro balloons in before adding the hardener) and apply the bondo to the balsa frame. The micro balloons make sanding a breeze. Have a dowel or piece of tubing as well as some rubbing alcohol available. Dip the dowel/tube in the alcohol so it is litteraly dripping wet, then use this to smooth the filet and contour it.

Hope this helps.