What type of plastic 2 use on decorative side of plasterboar

[speedwing]

Hi I need to make good some 4" square holes. The walls are dot and dab
plasterboard walls, with the decorative side facing out.
Looking through the wickes catalogue I see they sell the following plasters.

Thistle Board Finish
Thistle Multi Finish
Thistle Bonding
Thistle Hardwall Plaster

Which one should I use?

I will be cutting a slightly smaller square to fix in the hole first, but a dont want to see where I have made good the hole.

Thanks for you help.

 

[Micilin]

You can use Multi or Board finish.

You use the white side of the board for everything now, skimming or jointing.