A bit of further research tends to suggest that the bumps on typical frp may be too big for smaller scopes, causing a wiggle as the scope is rotated.
Plan B is to order into Bunnings some Wilson arts ebony star (#4552-50)laminate.
Failing that, Formica #1782 Stardust Quarry Finish is also recommended.
Anyone in Melbourne willing to share the cost of a sheet? I anticipate something on the order of $30 to do a typical gso dob base.
edit: Have since seen that quarry finish is now replaced by pearl finish
