Thanks
Mikan,
whispering-leaf,
blackiegracie,
teddybear4me2 and
nataluna for your sweet comments.
Forgot to say that those sands are very rough, not smooth.
Mikan,
blackiegracie: That day is very nice, with nice weather and clouds on the sky, we don't have nice clouds on the sky everyday. There are some other boats too, but many people rented them, it's $8.00 / hour, for people to visit the whole lake.
teddybear4me2,
nataluna: My husband like to make turtle...
He made a snow turtle at our backyard early this year after the snow storm, and now made a sand turtle.
I think because they don't want people to waste water and heat, so they have to charge for shower. We didn't shower, cuz the lake water is clean, we only use the outdoor open area cold water shower to flush away the sands.
I should take some pictures of the restroom and the shower & changing room
Zoila
I love the sand sea turtle. 
