 Smcdermott  No experience with tarpon but a couple mods I would make to your set up would be the following.  Backing: Make a bimini loop that is about 0' long. Double the loop back against itself and tie a surgeons loop. This will give you a doubled line that will help prevent a girth hitch from forming when attaching to the fly line loop to loop.  Leaders: I would tie your 00lb tippet to the shock using an improved blood knot not the loop to loop you propose. I think this will accomplish two things. More stealth and a lengthened shock. Those loops use up a lot of line in my experience. Put a loop in the 00lb section and loop to loop with your 00lb section. Yes you will eat up more 00lb line over the long run but you will also be changing out the line which is most likely to abrade more often hopefully resulting is less lost fish. I reccomend using RIO or Mason's hard mono for the class tippet. Much more abrasion resistent than traditional mono and easier to knot to the heavy shock.  Leaders: I will defer to the tarpon specialists but the 000lb shock seems heavy for 00-00lb fish. I would think 00-00lb Seaguar fluoro would be sufficient and much easier to knot to 00lb tippet.  hi Smcdermott  These are very good suggestion especially the double loop on the backing. Are you saying i should fold the backing twice before making the bimini loop knot to double the backing along the loop? I am using the Seaguar Fluorocarbon leader material to make up the Tarpon leader and shock tippet...etc. I use the 000lb shock tippet is in case those Barracuda show up and eat the Tarpon fly !!!  PS: Just to let you know I am from Saskatchewan, Canada. The nearest ocean is about 0000 km away !!!  Thank you for your help.  