Gosh I hate it when I have to work on complicated parts in my boat engine, when my friend is helping me.
Have you tried seeking expert help?
Nah I can do it myself, I just have to hope that my buddy doesn't do anything crazy when my hands are in between the hydraulic lines. 
hahahahah so you are more worried about your friend than actually fixing the boat?
Yeah I can fix the boat, I just need to be sure my help can handle their tasks appropriately!