Boatlanes Lake Fork Chip Lowrance
I don't think you can get these anymore - I tried to order the Rayburn and T Bend cards but they were never shipped, they never returned any phone calls or emails so I had Mastercard dispute the charges
SD card will download the boat lanes and bonus guide trails to your LOWRANCE unit mapping. I use it with the Navionics map personally
I will send the detailed instructions with the card for downloading to HDS Gen 2 and older models. Gen 3 has to be copied to a micro SD card. Refer to Boatlanes.com for compatibility questions.
Asking $60 because I do not believe these are available any longer on a card, at least I could not get one even after paying for it online, so I'm not going to sell for less than it cost me.
Item is in Fort Worth