Seem like as long as the storage area is flat and paved, I should be
able to move the boat with the help of a trailer dolly.

Currently, that area is level, but is not paved. This means I need to
pave that area. Or may be I can put some concrete blocks and pressure
treated wood on the ground for the wheels of the trailer dolly to ride
on.

Sound like I will be able to find a way to move the boat in that area
with man power alone. Thanks again.

This is a follow-up on my initial post.

I used manpower alone to move the boat into final location on a paved
surface two days ago without the use of a trailer dolly. This "kind
of" worked. But this required two adult men and this was very
exhausting. I cannot imagine how we could do this in a un-paved
surface.

The main problem is that the front wheel of the trailer is very small
and doesn't turn that well. This means we needed to hand turn the
front wheel to point to the right direction. The other problem is that
the combined weight of the boat/motor/trailer is around 2500-lb that is
quite heavy to be man-handled (at least to me).

What this means to me a
- I have decided to leave the boat on an already paved surface
on my driveway instead of trying to pave the area that I
originally intended to park the boat with bricks or something.
- I will "definitely" get a trailer dolly. If it works well enough,
I may choose to move the boat myself alone instead of
requiring another person to help me.

Thanks for all the suggests that I have received.

Jay Chan