Figure 5-8. Turbulence created by natural land formations. Figure 5-9. Enclosed trailer containing carriage and wing on top  of RV. Weight and loading must be considered before each fl ight.  Do not exceed the maximum gross weight as specified in the  pilot’s operating handbook (POH). The balance of the pilot,  passenger, fuel, and baggage is usually not an issue, but must  be reviewed in the POH for the specifi c make/model since  some may have balance limitations. The fore and aft carriage  attachment to the wing hang point must be within the limits as  specified in the POH for weight and loading of the carriage.  Always follow the POH performance limitations. It is best to keep the WSC aircraft in an enclosed hangar, but  trailers may be used to transport, store, and retrieve the WSC  carriage. If the trailer is large enough, the wing can also fi t  inside the trailer. If not, then it must fit on top of a trailer,  truck, or recreational vehicle (RV).  [Figure 5-9] Enclosed trailers are preferred so the carriage is protected  from the outside elements such as dust, rain, mud, road debris,  and the interested person who may want to tinker with the  carriage. The WSC carriage should fit snuggly without being  forced, be guarded against chafing, and well secured within  any trailer. It is best to utilize hard points on the carriage  frame and secure each wheel so the carriage cannot move  fore and aft during transport. This is best accomplished by  first tying the front wheel from the axles, the fork, or a hard  point on the frame with a slight forward pull. Then, secure the  rear wheels from the axles or a hard point on the frame with  a slight rearward pull. Guides on the side of the wheels and  wheel chocks in front and back of each wheel are additionally  helpful to secure the carriage on any trailer. The wing must have ample padding and should have at least  three support points where it rests for transport. Transporting  the wing properly is of critical importance because the wing  resting on any hard surface can wear a hole in the sail and  cause structural damage to the tubing. The greatest wear and  tear on a wing can occur during transportation. Each support  point should have equal pressure—no single point taking  most of the load. The wing should be tied down at each  attachment point to secure it, but not tight enough to damage  the wing. Wide straps are better than thin ropes because the  greater width creates less concentrated pressure on the wing  at each tie-down point. Once the loading of the carriage and wing is complete  [Figure 5-9] , take a short drive, stop, and check for rubbing  or chafing of components.  Prior to taking the tow vehicle and trailer on the road, inspect  the tires for proper inflation and adequate tread. Ensure  all lights are operable, the hitch is free moving and well  lubricated, the tow vehicle attachment is rated for the weight  of the trailer, and the vehicle and trailer brakes are operable.  Avoid towing with too much or too little tongue weight,  which causes the trailer to fishtail at certain speeds, possibly  rendering it uncontrollable. Be extremely cautious when unloading the wing and carriage.  This is best done with two people since the wing usually  weighs more than 100 pounds  [Figure 5-10]  and the carriage  5-7  Weight and Loading  Transporting