"Tape" is too thick, has that raised edge, and will just be a pain to blend into the hull and deck surfaces. It can be done, but...

Better is bias-cut glass. Hopefully you've been saving your bits of excess glass from the various steps. The triangles that get cut off near the boat's ends are especially useful: find the hypotenuse, the edge that isn't parallel to any of the fibers, and cut 2" strips from that edge. These are fragile pieces when cut like this- if you pull them they'll shrink in width (so don't do that). After sanding your deck radius, and the glassed edges from the hull and deck, paint a coat of epoxy along the sheer, and gently apply the dry glass strips onto the wet epoxy, while not pulling or distorting it as well as you can. Finish wetting the strips in place, with a brush or foam roller.

The edges of this kind of 'tape' will be much thinner and easier to blend/fair. And, all the fibers cross the joint, making it doubly effective.

Great advise from nemochad.  I will add that you can get a great easy to blend seam if you mask where you want the seam to be before glassing.  Then, wet the cloth out so that it overlaps the masking tape just a bit (<1").  Allow it to cure a few hours then gently and cut along the edge of tape wit a sharp razor, and pull the tape off.  The resulting seam will dissappear with a couple of fill coats nd a little sanding.  Picts below (I Hope).

  Thanks for all your help.  I followed your instructions including the tape and it turned out great!