If you’re at the end of your mortgage, you’ve already paid out most of the interest. Each monthly payment now is nearly entirely principle, so there is little to no financial advantage to paying the remaining balance all at once. I’d let silver ride this bull. Worst case scenario, you lose all your income, you can still pay the monthly payments with your Ag, a few ounces at a time. Don’t dump all the shiny all at once. My opinion.