Many years ago, when we moved into our first house that had a fireplace, I bought a chimney sweep kit. The chimney sweep brush was separate, and the poles it attached to was separate. I completely miss judged the height of a single story house, and ended up buy about 60 feet of pole. To my surprise when I cleaned the chimney, I only needed 2 sections.
Well, since then we moved. Our current house has a fire place, but I've not attempted cleaning it. But those poles sure do work nice cleaning out the 40 foot of cloths dryer pipe a couple times a year. I tape a brush to the end and then I can add a section, turn the rod and clean the pipe with the dryer blowing.
Anyway, I did find out that if the pole gets too long, it get real wiggle. Still, you might consider something like that to make a mast, especially if you drop it into that PVC pipe.
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