Salty uses old scrap wood so they are ful of nails - Just kidding,
Actually you can sort of "hang" your fly on the nail and it will help with casting and not getting all hung up. When the small sand eels are around and thats all bass are keying on I use this setup. In fact I heard there is a krill bite that happens every summer and I may try these for that too.
You can also use an old popper with similar effect.
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