how to find water line?

[winner]

i've looked aroung and the only thing i could reallt find was "leave it in the water for long time until stuff grows on it" anyone have a simplier idea?

[Boatman]

Put your stuff in it and float it in tub. Or weight equivalent to your gear and even take pictures of it floating if your doing a paint job.

[winner]

Put your stuff in it and float it in tub. Or weight equivalent to your gear and even take pictures of it floating if your doing a paint job.

i tried that a few days ago, but as soon as i started drawing the line it disturbed the water and i couldnt get a accurate line

[siberianhusky]

Read somewhere that somebody put talcum powder in the water set the boat in, when they pulled it out the talc stuck to the hull showed the waterline.
No idea if it works, just something I read on a sailboat board.