Know Before You Go
The island is near the HI Hostel on Riverside drive. There is no bridge or walkway to the island. You must use a non-powered watercraft to get there. Swimming in the lake is illegal. There are many kayak, SUP, and canoe rentals on Lady Bird Lake. As of this writing the closest is EpicSUP rentals.
Getting onto the island is easiest on the east side, though you can also port on the west if you want to clamber up a six-foot dirt drop off.
During many times of year open fires are banned in Austin parks. Please don't burn the island down.