The trick is a combination of the 2 mediums! Lay down a layer or two of gloss medium, let fully dry, then do a final seal with resin. For extra protection, add a UV-sealer between them.

NGL, one of the best sealers I've found for a brushstroke-free, high gloss finish without messing with resin is Rust-Oleum triple thick glaze. Obviously it won't give you a mirror-smooth finish like flooding it with a ⅛" resin, but will keep it sealed and glossy!

Thank you! I used a triple thick glaze spray paint from Rust-Oleum

I do 3-4 really thin coats and allow them to dry in between (like 15 minutes) so I don't cause pooling or drips. So far it's creates a beautiful shin and isn't sticky!

https://www.amazon.com/Rust-Oleum-264985-Specialty-Triple-12-Ounce/dp/B00D0293SA

This is what I’ve used for quick and easy covers

I haven't folded over the sides, but use lazer slide decals. I use

Rust-Oleum Triple Thick Glaze https://www.amazon.com/Rust-Oleum-264985-Specialty-Triple-12-Ounce/dp/B00D0293SA/ref=sr_1_1?crid=204W6N8VR83XM&keywords=rustoleum+triple+thick+glaze+spray&qid=1559152318&s=gateway&sprefix=rustoleum+triple+%2Caps%2C235&sr=8-1 it goes on thick so you need fewer coats, seems durable for me so far.