Just received a naish kite I bought second hand. It is in near new condition but has sections quite messy with surfing wax. I am afraid to pour hot water on it in case it affects the fabric. Scraping it is a mundane task with not so good results and potentially weakening the fabric. Leaving it will get the rest of kite messy and sand will stick to it (not good in the long run either). Any tried and tested methods anyone?
The photo does not show it too well - it is quite extensive, say over 1 m2, some on heavy duty material, some canopy material.