The only thing I tow is a 5x10 utility trailer with a honda 500 4-wheeler on it. It doesn't squat but maybe 1.5" or so but I keep feeling like I need more support in the rear. I got air bags but I felt that was overkill and I didn't like having to manually air up the bags and constantly check the psi. I had the dealer looking at a vibration issue (~20 mph) and they told me to take them off so they know if the bags are causing it or not. So I took them off but never had time to bring the truck back to the dealership. I'm considering putting the bags back on and getting a air compressor system with guages or just getting an AAL done. I found an AAL online for $46 and a local shop here will put it on for $50 so all in all I would only be spending $100. If I can sell my bags for $200 I'll at least have $100 back in my pocket. I'm just worried that putting an AAL on will raise the back in up enough to make the vibration even worse because I feel like it's a driveshaft angle/alignment issue.