on I35 take exit 330 (Hwy 6) go west on 6 towards Meridan, cross over lake, take first exit after lake, continue west on the service road for about .8 of a mile, turn right on Overflow Rd. Continue on Overflow, turn right at the first gate you come to. You're there.

At Overflow and the service road you will see a sign "HOTMAC" and also one for the marina.