I couldn’t find too much info regarding towing boats with heavier tongue weights. I did see a few threads on airbags and tried it myself. I hope this helps others because I wasn’t sure how it would turn out. LC 200 series. The boat is 26 feet. Twin 150s. Package prob at top end of tow rating. But tongue weight was making it sag on the bump stops pretty badly. I got the “heavy duty” airbags from airbag man off eBay. THey’re firestone bags but sold by airbag man . They come with the HD fabric bag that protects the bags. Also comes with all the tubing and connections. Anyway, the installation was 3-4 hours from start to finish. Hardest part was getting springs in and out Once I dropped the axle. I ran the valves under the bumper with individual circuits for left and right. Tried it today At 50 lbs pressure in the bags and zero sag. Handled much better . If you’re thinking about getting the airbags, do it. Makes towing much easier And didn’t cost that much in terms of time or money.