Tie the floats to the end of the line that isn't tied to the pots! Use good knots so they don't unravel and allow your floats to just float away. We zip-tie our knots for insurance. I suggest that you might want to custom color your floats so that you can pick them out in a crowd. Name and phone number might not hurt either, in case the floats get sucked under in a strong current. There is always the (slight) chance that somebody will notice them after a couple of days and recover them for you.
I use two floats per line - less likely to get sucked under if the tide gets to ripping.
Sad to say, you need to keep an eye on your stuff when it's in the water. I lost a setup earlier this year, guess somebody confused the only zebra-striped orange floats on the bay, with my initials on them, with their bleach bottles. I can see how they got confused.
Avoid dropping your pots in a navigation channel.
Let us know how you do. Good luck, crabbing is a gas!

Watch your fingers, and don't crab barefoot.