How do you move HEAVY speakers with sharp spikes without lifting?

I have moved my heavy speakers by putting a sleeping bag to the side of them and very carefully tipping them over on their side onto the sleeping bag and then pulling the sleeping bag and speaker to where you want them and reversing the process.

One obvious answer is to remove the spikes altogether. I've yet to hear a speaker that sounded worse without spikes.

Failing that, another vote for Herbie's Decoupling Gliders,

http://herbiesaudiolab.net/spkrfeet.htm#cone

mr_hosehead,

I used (and still have) a dolly or "hand-truck" to move around my big Thiel 3.7 speakers.  As I had to move them often enough, this got old pretty fast.   

It was necessary to get them from one room to another.  But if I were only moving them about, tweaking their position, in the same room the glider solution was much more preferable.  IMO.

Yet another vote for sliders.  Works like a charm on wood, carpet, and tile. 

Please film and post the JATO bottle attempt!

I tried the sliders but didn't work for me. I used 4 inch round plastic sliders and cut a 1x2x1/8 inch strip of heavy steel to provide support and placed steel between slider and spike. Sliders bent too much under the weight due to carpet pad being too thick causing the speaker to be unstable.  I think would have worked with lighter speakers or thinner carpet. I also can't lay speakers on their side due to their shape.

Book insert/shimmy to add/remove spikes is a good idea - will try that but installing/uninstalling my spikes is a pain.

What kind of worked was my original method but it's still not ideal. I cut a piece of 3/4 inch thick plywood to cover just over half the area under the base (i.e. to support 2 of the 4 spikes) and have wood extend a few inches out beyond the bottom of speaker. Cut a second piece to cover the other half of base. Tilt speakers about 25 degrees onto 2 of the 4 spikes and have a second person slide one of the wood pieces under the 2 spikes which are in the air. Lower the speaker onto the wood and tilt the other direction, slide the second piece of wood under the other 2 spikes. Now two pieces of wood under the speaker with 2 spikes per piece of wood. Can now slide entire speaker on spikes a few inches with some effort. 

A couple inches makes a huge difference with my omni speakers. Thanks for the help.