if your hyperlink is getting very soft and soggy too quickly, as it may well be after so much use, then consider a waterproofing treatment that works well,
I have used fabsil gold (uv protection in the Gold version) 5ltrs around £25 off ebay/amazon,
one kite takes around only one Ltr for a 11mtr kite, easy to do.
Pick a warm day with little wind, hang up the kite by the top Y bridals and use a clothes line pole to push up the line to suspend the kite well clear of the ground, then use a hose pipe to thoroughly wash and clean the full kite, I do this early morning so I can then let the kite fully dry, to help this process I insert the nozzle of a hairdryer with a rose attachment fitted into the back zip and trap the dryer in place by shutting the zip on it to trap it, you can of course use one of the two little zip entries for the 5th line snow kite conversion to trap in the hairdryer, I leave the dryer on low speed which is enough to inflate the kite and dry it very thoroughly.
once very dry and clean inspecting all seams for tiny bits of trapped sand, then I get to work brushing on the Fabsil,https://www.amazon.co.uk/s?k=fabsil+gol ... u9k20a23_e
using a very wide new brush, so quick and easy to do, the cloth goes very shiny wet as you apply so easy to spot where you have maybe missed a bit, I keep the kite inflated to make the job easier, after the kite has dried the wet look fades (shame really) then maybe 3hrs later I go over the kite ends again as these seem to go softer first as the kites gets more abuse at the tips from rolling up too tightly and sand wearing the cloth from weighting it down.
It definitely works, water just runs off the surface so easily after treatment, kite will float longer before getting soaked, dry more quickly after a rain shower, and hold air better when landed on the beach. cloth feels and looks slightly better better as well, at a tiny cost per treatment whats to loose?
tip- wear old shoes when applying, as the silicone ingredient drys on your skin and waterproofs your feet.
the treatment adds very minimal weight as the thinning ingredient evaporates away, I did read up a lot before applying this fabsil gold and the boffins say that as you use the kite then you normally abrade the covering in normal use and over time wear away any surface treatment the manufacturers apply when new, therefore reducing the weight very slightly, so adding this treatment back to the kite then you are only renewing back to the original weight.