Thanks for everyone who has replied in my post.

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.

Jay Chan