Lift it out of the water.

Personally run a 17 ft lund with a 9.9 kicker.  Have been on-the-water checked numerous times.  Prop on, motor up is completely legal.  As a side note, I have a drive on trailer which the 9.9 will not do on some ramps.  I asked about dropping my 90 to finish loading.  One officer said he thought that would be legal and one other the officers said they weren't sure. 

I don't think it even needs to be lifted out of the water. As long as it is not running, I believe you're good.
 

I use my 9.9 for propulsion and my 50 as a rudder.

thanks guys, I have an I/O on my 20' Lund Fisherman and really was hoping not to have to take my prop off each time, not like its that big of a deal but still.

never took my prop off of my 90 and have been checked while on the water

Leave your prop on. You may need to use it.
Mike

fishin coyote

Leave your prop on. You may need to use it.
Mike

+1
 

Well my son and I hit the water at 7am this morning.  Sat thru the rain/drizzle and a stiff breeze out of the south, but oh was it worth it.
Finished up with about 30 nice crappies, and I do mean nice!

Opsman,
Sounds good! Heading up tomorrow. Were you north or south of the causeway?
Tightlines,
Ed