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
Rent an aluminum hand truck from Home Depot or Lowes.  Slide bottom under, tilt back and roll.
You can try replacing the spikes with carriage bolts (round headed, make sure they are then same thread).  I use them with my Sound Anchor stands so I can move my speakers Harbeth P3esr) into the room for better sound.  Of course, I'm not dealing with 175 pounds (with that mass, I suspect the carriage bolts would work, but the speakers will still be challenging to move).  Cheap experiment.
I use a four 18"-long 2 x 2s to move my Vandersteen Treo CTs (≅ 65 lb each). I rock each speaker back enough to slide one 2 x 2 under the front, and forward enough to slide another under the back. You move them by (very carefully) pulling each pair of 2 x 2s in the intended direction. This has worked for me on a rug and an bare floors.
+1 Herbies gliders. My speakers are 220lb.s apiece w/spikes and i move them anytime no problem ....on wood floors.He can tell you if they will work on wood floors.