towing V20 w/explorer

I just towed my V-20 I/O from Daytona Beach to Charlotte, NC. What a haul! Usually a 7 to 8 hour trip. Took me over 12 as I stopped regularly to shoot grease into the hubs. Tow vehicle was a Dodge truck with a class 3 hitch. I am surprised at how heavy this boat is!
Does anyone have an idea of the appx. weight of the V-20 with the 5.7 liter Mercruiser?

Thanks

Rick