I just did a 5 mtr piece! actually two of them.
The key is prep. I used Stabond two part glue. I taped off the area, sanded down the tube and the strake with 100 grit, cleaned both with MEK, put one layer of glue on the tube and let it dry. put a layer on the strake and let it get tacky, almost dry. heres the tricky part, use a heat gun and heat up a small section. press the pieces together then heat up the next section. Do 1 meter at a time.