Single AAL vs progressive AAL for towing

I tow 3k to 3.5k lbs several times during the summer months. The rest of the year I'm mostly unloaded with no additional weight. I'm getting ready to lift 2" all the way around. I know the ride with the 3 leaf progressive AAL would be better, but would it sag noticeably more than a single AAL during those times I'm towing?

 

Get the springs that ride the best for the majority of your usage, and then supplement with something like a Sumospring to handle the extra load when towing. I've got the progressive AAL, sumosprings, and a topper. I have about 3/4" of space between my sumo's and perch. Rides great to me.

 

Thanks, somehow I had forgot about sumo springs. That might be the way I go.