So I was about to go out and start digging tree holes, but then I got tired just thinking about it.

Lazy-brain kicked in and I realized that I should try digging it with a pressure washer.

Now my 120v washer isn't going to cut it so I'll need to buy a $400 gas washer, but I think I can do the whole job with that and either a similarly cost 2" gas pump (for sludge waste) or with a venturi-based attachment for the pressure washer itself.

Laziness promotes the best, smartest engineering. 

 @394b5c0e 

Just put on this music and dig the hole:

https://m.youtube.com/watch?v=ytWz0qVvBZ0 

 @394b5c0e 

Lazy and smart is good.

Stupid and hard working is dangerous! 

 @394b5c0e 

Use tannerite! 

 @394b5c0e rent a little tractor? 

 @394b5c0e It's a legitimate way to dig, especially so if you're worried about underground pipe. 

 @394b5c0e That sounds really messy.