mussel forms and float tubes?

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I want to start using a self-powered float tube. What do I need to do about mussel forms at the lake? In years past when I took a boat to the lake, I just needed to sign the paper form and put it on my dash. If I pull a float tube out of the back of my truck, is that not the same as launching a boat, in that all I need to do is put one of the signed forms on my dash? Anything special for float tubes vs boats? Thx.
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