Thanks, it really is a diy job, and a very good point about the struts working in pairs. One will just not hold it. As with ToeKnee above, don’t ask me how I know…
I’ve also replaced the manual strut on my Octavia’s bonnet with a pair of AliExpress-supplied gas ones. I had also to buy 4 replacement bonnet hinge bolts, two for each side, ie ones incorporating the male bit of the ball joint. I wasn’t the first to make the mod, I must give credit to another member on the Skoda forum who posted spec and source detail.