IM gonna throw the flag on theTVA biologist, probably the same one that told me that salt water stripe were not able to spawn below gville dam,I been all over the big G since I was too young to fish with my dad till now 65 years late and until about 10 years ago never seen a sprig of it,now its even growing below guntersville dam on the sand bar,seems to grow the same places Milfoil and hydrilla does and places where it never did. Maybe it took this long for all the fertilizer that runs into the plae to make it grow.........................