Fat tires are very 'spensive. Certified Problem Solver "El Gato"sends in this report from the field: 


Ultra-mean tire gash. Does this mean $100+ dollars down the drain? 


Nah. We got this. 


A view from the inside


Cut yerself an appropriately sized bit of spare inner tube

 


Glue: spread it on


Patch it. 


Ensure adhesion. 


At last report, this solution has held up for 2 months of winter riding so far. Nice work Gato!