You definitely need the mast hinge
to raise the mast. Be sure to remove the hinge
pin before raising the sail or the hinge
will bend/break and you won''t be able to lower the mast.
Start with the side stays connected, the mast base hinge
connected and the mast laying down. Tie a line
around the head stay above the lower terminal (clove hitch), run it over the top of the "bridle" where the headstay terminal will connect to, and then back to the trampoline, passing under the bridle. Tie it to the lacing on the trampoline.
Stand on the rear of the tramp and lift the mast, walking it iup into position like lifting a ladder
. Once vertical, lean on the mast with one hand, reach down and pull the line
(tied to the tramp lacing at your feet) to the headstay until it is snug - not tight. Tie it securely to the mast. Get down off the tramp and go connect the headstay terminal.
Reverse the process to lower the mast.
Have fun. Hobie 16''s are great boats.