Reading the previous threads to regrip a board, the options seem to be:
a) Intergrip or Sugar
b) Bote Cote epoxy or acrylic urethane clearcoat

Intergrip seems easy to buy at Whitworths.

What is a good product to use if I go for the acrylic urethane clearcoat option?

Is that acrylic urethane clearcoat?

^^^ oops- gloss level.....

^ I've only EVER used SATIN RUSTOLEUM.(Bunnings) It sticks to anything.
But I think the real trick is to NOT put too much on OVER the Intergrip particles..
I lay down a nice base coat on the board , about 1ft at a time. Sprinkle the particles as reqd. Then lightly spray over the particles as you start the base coat for the next section. Spray from a few angles. Just dont drown the particles.
Easy to see what you're doing n where you've been if under a fluorescent light. Set board up so you look at the light on an angle.