Finishing products for a polyurethane painted sailplane

[John Scott[_2_]]

I am doing the finishing on my sailplane. It is entirely painted with
polyurethane. It has never had gel coat on it, ever.

What product should I use to wax it?
Do I need to avoid any wax with silcone?
What about using products like Dri'n'Wash?

Thanks,
John Scott