I made a stake out pole at Lowes for about $20. Got a 4-8ft extendable painters pole and a screw on garden hose anchor spike that threaded on well enough. Some super glue and duct tape to hold it together and it did great. Downsides are you only get the length of the spike securing you to the bottom which can be pretty loose on windy days and I only got a couple months out of mine before the spike broke. I think a day of staking out in oyster beds cracked it and staking out against a dam and a sunken stump on the day it broke finally did it in.
I went ahead and got the 4ft YakGear pole for $25 to get me by until I fix my painters pole.
I spotted a hardwood mop or broom handle at Home Depot for $6...sharpened the point even more and ran a screw into the point. Then cut and filed the screw so a metal point protruded about quarter of an inch. Then coated the screw and wooden tip with epoxy. Added a lanyard/tether and a grip. But, it's only 5 feet long. Will slide down thru a scupper hole or hook to anchor trolley.
Broom handle with the end cut at a sharp angle. A hole in the other end with a loop of rope through. Work great but only disadvantage is its a little short when you are in 2 feet of water and push through 2 feet of mud.
Thanks for the replies so far. I keep forgetting to do a search before I ask questions and read about a few more ideas. Right now I'm all about DIY on the cheap. I sent yakattack fly flinger a PM, I'll call him tomorrow.
What I did...
8' grounding rod at Lowes. Cut off 6-8" from one end and weld it on sideways to make a "T" handle. use a grinder to sharpen the other end. It's not as light as a fiberglass, but I can assure you that you won't break it, though welding skills may vary.