Thanks, that is very reassuring!
I ordered some IsoAccoustics feet for my Garrard project from my normal dealer in Sydney, who said I would not need them if I bought his demo Holbo! So his experience also suggests placement is easy.
By way of background, the Garrard is sprung (not as softly as a Linn) and I have removed the springs, using lots of mass with constrained damping instead)

