To get the best results would require a long process and make the maximum effort.
On this occasion I will share tips for making quality kites and have long endurance. As a hobbyist with kites there are many stages that I do to get good quality from my toys.
One of the things I do is provide enough "Fumigation" to the kite frame that has been shaped in such a way.
This fumigation aims to remove the water content in the framework of bamboo and also serves for long-term preservation and is not attacked by bamboo lice.
With enough fumigation will be strong, resistant and and maintain the flexibility of the bamboo for a long time.
Good luck !!!