[Ag-eq] My tree project

[Jewel]

I have obtained 4 very sturdy barrels, and now comes the task of modifying them so that I can use 
them to protect my seedling trees against the predations of my sheep.
My sister suggested that I take them to, say, a plumber or roofing firm that would be equipped with 
electric blades for cutting plastic, but I am closer to being a poor woman than a rich bitch at the 
present time, so I am tackling the job on my own.  Actually, cutting the plastic doesn't seem to be 
too hard on the saws that I have, but it is still a massive job, but I have the top off one barrel 
and am a little way around the bottom.  The bottom is much easier than the top which is made of a 
very heavy plastic.
Any ideas for recycling them?  Rather sturdy frizbies?

          Jewel