[jesam]

Just had an idea  is it possible  to use rear boot dampers for the bonnet had a good look at the boot and it looks like it might  work with all the brackets  plz give me your  thoughts

[Asterix]

Haven't tried it, but you also need to make sure the torque, Nm, of the dampers fit the weight of the bonnet.

I would be surprised if it isn't possible to find aftermarket dampers for the bonnet.

EDIT:

Found this:

Hyundai I30 Gas Bonnet Hood Damper Lift Kit - Autobahn88 - DAMP-N21

[asathorny]

It has been done and indeed I intended to do it.... 
 have you searched..  if you do you'll find it

[Asterix]

Gas bonnet struts and flex wiper blades