I have never fished with an 11' Pflueger so I cannot say what it can or cannot do in comparison with a tenkara rod. Get a spool of 0X fluorocarbon tippet material. Tie 11' of it to your tip guide. Add 3-4' of 5X tippet and an unweighted wet fly and go fishing. If you can cast the 0X "line" effectively, and if your rod will protect the tippet so that the fish you normally catch don't beak it, and if you don't break the rod the first time you try to net an 18" fish, then your Pflueger will do everything a tenkara rod will do other than collapse to 20 some inches for ease of walking through the woods to the next spot you want to fish.

Again, I'm not saying your Pflueger can't do those things. I don't know if it can or not because I've never used one. For the price of a spool of tippet you can find out, though.