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


I have large (175 pounds each) speakers with sharp spikes placed on carpet. I would like to be able to move them a few feet by myself to tweak their positions but lifting them is obviously not an option (I can't even lift half their weight).

I currently use a convoluted method involving tilting them over about 30 degrees, slide a board under spikes on one side, and then repeat on the other side. The speakers almost toppled over the other day which would damage them.

I'm aware there are non-spike alternatives but do not have the money to spend on these options. Any clever moving methods out there? 

Thanks!
wahoospiff
I tried the lift three spikes and pivot method and spun the spikes so tight, that one stiped the female end and the spike fell off!  I had to get some really good epoxy to fix the issue, but will never do that again!
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.