You may want to try Knight Key RV resort in Marathon to store the rig. They are eventually closing down for a new condo complex, but I heard they will still be in business this season and next. I heard they will store a truck and trailer for about $5.00 per day. Scuffy has hit many of the spots to stop on the way down or up from Key West. Stock Island Marina Village isn't a bad place to stay when going to Key West. It is a very nice facility. It is outside of Key West, but they have a shuttle that takes you right downtown on a regular basis and they will also take you to grocery shopping etc. Newfound Harbor a bit east of Key West is a nice stop for an overnight either going or coming. Wind direction and speed or wind may dictate whether you want to go down via Hawk Channel or the Gulf side. The Gulf side can be shallow in spots and your choices for overnight will be more anchoring than marina facilities.