I have a 3-ton jack (for me to change my winter tires on my car), and now I
am trying to change a flatten tire on my 16' trailer of my boat, but I am a
little bit confused..I can't find lifting point, where should I put the
jack? any idea?

Also, do I need to grease the wheel bearing on the trailer wheel? Can I use
WD-40, just spray?

Boating Newbie