I have been told a grabage can with the bottom cut off or a huge steel pot with the bottom cut out works great. I have never tried myself, just purely heresay.
Good luck
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In the legend of King Arthur, the Fisher King was a renowned angler whose errant ways caused him to be struck dumb in the presence of the sacred chalice. I am no great fisherman, and a steelhead is not the covenant of Christ, but with each of these fish I am rendered speechless.