Booty, I am currently experimenting with basicly the same idea as you.
I insulated my antenna from it's mast by using a shovel handle made of wood shoved into the top of the mast. I then attached the antenna to the handle.
I have taken 4 pieces of 10 gauge wire 9' long and attached them to the base of my Imax. I then tied fishing line to the end of the wire and pulled them out as far as I could and tied them off. I used bricks to do so.
On my feed line I made a choke by taking a 6 1/2' piece of RG213 coax and winding it 8 times around a 4" piece of PVC.
I have two stations in my area that I can rely on for accurate reports. One is 17 miles to the North and the other is 5 miles to the South East. Over 3 days they are going to report my signal strength back to me and I will take note of theirs and log. Also I will be asking 2 neighbors, both relatives to check for interference in their homes. This will be done this weekend. I then will remove the wire and choke and retest the following weekend and compare the information.
After I do my experiment then I can judge for myself whether it works for me or not.
I'm starting to like this hobby more and more now that I am learning some of the theory behind it.
I'll post my results when I have concluded the testing.
Thanks to all who have helped me with this. Especialy the guy across the pond.
Hey Cajun Invader, just checking in to see if you have made any progress on your testing the mods to your Imax?