Sportsmansguide is selling BSA 30mm red dot for bow. I would like to have your opinions about having a that red dot on bow for deer hunting. Is that a good idea? Should I aim and shot better with red dot? Is BSA 30mm is any good? Thanks a lot.

Here is the spec:
[ul][*]Red Dot has 11 brightness settings, for visibility from dawn to noon to dusk[*]Aluminum mount will fit any bow (and can also mount other BSA® Red Dot scopes, even larger objectives)[*]5 M.O.A. dot, appearing as 5" @ 100 yds., 2 1/2" @ 50 yds. and so on[*]1X view. 68' F.O.V. @ 100 yds. [*]Matte Shadow Black finish[/ul]http://image.sportsmansguide.com/dimage/56375_ts.JPG?cell=200,200&cvt=jpeg