whooligan
Having had 2 bonnet flips on my former Capri (4 cyl) I would HIGHLY RECOMMEND that you fit bonnet pins.
If you insist on not fitting them, I would suggest you use a leather belt type restraint in at least 2 positions as the bonnet tends to rock from side to side at speed if not properly restrained.
The bonnet catch on Capris are also fairly weak and tend to bend. This is why it is common to see them fitted sideways to provide a bit more strength against the slam panel. I have come across Capris where the catch has ripped a section out of the slam panel due to wind getting under the front edge.
Wow must be a common issue, leather straps might be an option,
I would prefer not to hack the bonnet with pins, but might not have a choice.