Ironically the worst kite for kite looping I tried was 2010 Slingshot Key 7m
. That kite would loop 1 out of 3 times (if you are lucky). Other times it would just hit the water. And I used a bigger bar on it too!
Everything else I had looped just fine, including 17m Contra and about 20m Wind-X. They are slow and won't catch you in the air after a loop, but they won't hit the water.