My tudor '24 still sports the original but ratty tatty covering. When I look at the offered 'Cobra' material I'm not interested. It seems substantial enough but not a match to my eyes.
My plan is to go to a boat shop and ask to see a sample book of available boat top materials. When I see the number I like, I'll order from them. I am near the coast so finding the right guy should be no problem.
Many areas of the country have waterways and attending boat services. You generally don't see advertising for them its a matter of being where the boats are and talking to the watermen they can direct you to such places.