I've been trying to varnish our new bathroom floor (solid bamboo
strip), but the brush marks are far to obvious for my liking.

Is there a trick to getting a smoother finish? I'm using Dulux
Diamond Tough Satin Floor Varnish with a soft 2" brush.

Perhaps I should be sealing the floor with something else entirely?

Also, should a varnished floor be wax polished afterwards?

Thanks

Bob