New Soliloquys with spikes and hardwood floors

Sound Anchors Cone Coasters.. Expensive yes but you can slide your speakers without damaging the floor (they have a special slider material on the bottom).
Newbee: is correct about piercing coins... I have experienced the same... Nickles from pre 1970 were the hardest if you had to do a temporary solution.

Sistrum makes some cone cups, plus their speaker sound good. I prefer the Sound Anchors because of the size doesn't allow the spike to slip out when sliding them into position.

You could float your speakers on Aurio Pro Max's also and then put some felt under the bottom of the Bearings so they don't mark up the floors.

You can buy metal floor protectors on which you rest the spikes or use four quarters which will work just as well.

Thanks all for your responses. I think I will try the coin trick first. That one will cost me less than a nickel.

linn audio skeets

To isolate there are pro-products for that or a DIY sandbox.

If you meant couple w/o damage to wood flooring...
coins dimple and that dimple tranfers a dent.So crazy glue a nickel with a penny on each side.

I've used fired pistol brass with Soliloquys tall long point.The head of pistol brass is thick and strong with a small center hole inside and nice bevel outside.