select a hook appropriate for the yarn weight. leave a 6” tail before you create the slip knot.
ch 15 - 20 (depending on the size of the finished hat and weight of the yarn).
sl st into the slip knot at the other end to make 1 loop. Repeat 3 or 4 more times to create a base.
ch 12 - 15 (a little shorter than the base loops) and sl st into the center of the hat and bottom of one of the loops in the previous rnd to attach. repeat 4 or 5 times.
after attaching the last loop, clip, leaving another 6” tail and drawing it to the underside of the loops.
draw the two tails to the inside of the hat (using a crochet hook) on opposite sides of where you closed the hat, so it holds well. Tie them on the inside -- 2 or 3 knots -- and then weave the tails a few times to ensure the are securely attached.