If you think you should pump one more time to be sure-DONT! . Learnt the lesson myself.
can't say I have seen an over inflated kite in years. Todays kites can handle more pressure than the kite pump can deliver. Mind you I saw someone come in with a leak the other day and when he crashed the kite on the beach it was almost dead flat.
I just keep pumping until I reach that point were you can't make full down strokes with the pump. Then I give it the fold test, if it resists folding in half it is pumped up enough.
Can I? Probably not. I'm fairly big. Not super strong. I'd probably give myself a hernia before I succeeded in over inflating a kite.
Can you?
Get a pressure gauge works a treat ,naish ones have the kite sizes on the gauge so just pump to the indicated size and your good to go,gauge is about $25 good investment.
definitely possible! popped my 9m at nationals this year, one pump to many in an attempt to straighten a twisted strut resulted in a twisted strut + a gaping whole in both the leading edge bladder and the material as well.. this happened 10 minutes after my 12 exploded on the beach. wasn't meant to ride that day!
A metal, not plastic pressure gauge will work, no brand names mentioned. All kites will explode if the leading edge or struts have scratches or small tears in them. Most if not all kite brands during the R & D phase use electric pumps set to 9.5 psi to give the kite ridgidity. an under unflated kite flaps like a jellyfish, and a severely under-inflated kite is dangerous.
Something else i have heard is that if you have your kite pumped up solid in the middle of summer or when it's really hot, it is a good idea to let a little bit of air out if it's going to sit there for a long length of time because the heat will expand the air in the bladder risking it exploding.
i blew the leading edge on my Crossbow from over inflation but this was an 08 kite. The main reason for this was due to a small worn patch in the leading edge which the bladder "bubbled" through and then blew a hole about a meter in length 
My new switchy pump seems to resist as mentioned earlier when you cant make a full stroke without applying a lot of pressure. This seems to be the right time to test the wing tip and do the ping test for me.
Hi guys.
Glad i found this thread coz i was thinking the same thing. Im only new to kiting but have been for many lessons with the local IKO instructor and he always says that the pump will let you know when the kite is full, ie cant physicaly cycle the pump up and down.
Being a noob I understand that i know sweet F A so i just did this the 1st few times 
HOWEVER, i now have North Fuse 10m and a 7m and the pump comes with a pressure guage. The "green" zone on the guage is from 4-5psi, "yellow" zone is from 5-7psi and everything after that is marked red. If i inflate it too the green it feels nowere near full enough so I use the pump technique which ends up around 6 or 7psi. Seeing it go into the yellow makes me slightly worry im overdoing it.
Does anyone else have any thoughts on this?
Cheers guys 
