ok so... i would really like to know the proper way to dry dock my turtle so i can cause as little stress to her as possible. she's getting these white spots on her shell that appear to be like air bubbles or something underneath the scutes.

i'd post pictures but for some reason i can never get a good clear picture of her shell. they aren't soft but they seem to be multiplying or maybe its just me. i'm thinking i might have to dry dock her if i'm right and i would like to know the proper way to do so. I tried looking on the net but i just get stuff about ships. ships = not turtles