using hokey pucks for isolating speakers from the

Seriously, anything that you put there will affect the sound in some way. You may like it, or you may not.

If you use some kind of product like hockey pucks, which are not engineered or designed for the purpose you use them for in audio systems, there is no telling what kind of results you might get. Could be great, could be terrible.

Many folks would likely recommend the use of items that are made to do what you are trying to do. Alot of the result will also be system dependent, and listener taste dependent.

Local damping and vibrational energy transfer are the two main schools of thought in this area. Look into both, and see what you think might be best for you.

What the puck?LOL..How about the difference in wood used?Say mertle vs. maple?

Take a look at Herbie's Big Fat Black Dots, down the page a bit here. I haven't tried them but they look promising and not too pricey. He has other sizes, also.

Three of Herbie's Big Fat Black Dots are supporting each of my tall and heavy speakers although four would avoid any chance of tipping if speakers were to be bumped into.
Clear, natural, and extended range performance by transmission line bass and ribbon tweeter design is the best ever with these modestly priced Dots. It's very well worth the slightly greater cost compared to hockey pucks
They are sold with 90 day return policy which should allow adequate time to hear for yourself if wonderful in your system.