I have a 2001 Ford Explorer w/ 5.0L V-8 I use this truck to pull a 21 FT. Skeeter Baypro boat, When I hook up the trailor, the back of the truck comes down a little to much. The rear of this truck rides low with no wieght on it, and I,ve noticed this with other Explorers. I was thinking of adding air shocks to the back. Can anyone give me any information on this. Thanks Very Much.