dealing with tree roots

I am scheduled for an install this Friday.  Due to trees in our backyard, I'll be having to go with a pole mount to clear the tree line

and will need to bury what I believe will be a 175 foot cable run to the house. Although I have a fairly good idea where the cable

will probably be buried, there are sevral tree roots above and below the turf and rocky soil. 

I did make the CSR aware of this and advised that if possible, the tech may need to come out and survey the install first.

However, she made it sound as though it was not going to be any big deal.  But... just to be safe, how are installers equipped

to deal with long cable runs that require trenching and getting around tree roots ?

Thanks.