Have you considered alternatives to tenting?
If the termite damage is confined to particular places you could try using targeted treatment like some of the orange goop that some companies do instead of tenting….
There is a company called High Tech Termite Control Inc that I think uses different methods depending on your specific problem….. fumigation or targeted treatment like microwave and/or orange goop…..
I didn’t use them specifically but someone I know did. They aren’t cheap for a whole house but maybe they are willing just to do a section. it’s not a recommendation or endorsement. just giving you ideas.
If it’s on the horizontal deck, it might be worthwhile to replace it with synthetic for the long term.