Are you going to tow that 5th wheel 'dry'.......NO
So forget that stupid dry number. And forget that magical tow rating number.
Real world......
What is your available 'payload'? That's the number left after you weigh your truck camp ready (Fuel, you, passengers, any stuff in cab, any stuff in bed...hitch) and subtract that number from your trucks GVWR.
Example:
Truck camp ready.......7800#
Trucks GVWR..........10,100#
Available payload......2300#
That's what's left (2300#) for 5th wheel pin weight
A 10,000# 'DRY' weight trailer probably has at least a cargo carrying capacity of 2000# (or more) so a 12,000# GVWR trailer will have a pin weight of 2400# (that's typical 20% of GVWR for pin with w 5vr).
Gee you have gone over your trucks GVWR (10,100) with a 12,000# trailer (what happened to that 17,000# tow rating :S)
Then there is the rear axle rating...6200# maybe higher (what is the rear axle weight for camp ready????) Got enough left over for pin weight??
Then there are the rear tire max load rating......3195#/tire---6390# (what was that rear axle weight??) Got enough left over for that pin weight??
Your license requirements......just like towing --------just because others do it wrong doesn't make it right/safe or something you should do. Don't be part of the 'pack' stand up and do the right thing.
I hate the magical numbers. Weigh your truck. Get the real numbers then do a little research and then do the math. It's simple addition/subtraction
And if you're not going to get the proper license..then just don't renew. At least then maybe you can't get insurance and won't drive.
Off my soap box........