I wouldn't want to say definitively, but typically, "short" areas of glass (like you're referencing) don't need coring (not always, but more often than not, anywyas). For the fwd "wall" of the well, just take off one of the boots around a hyd line and check? Do you have an inspection port (or small door) forward of your left foot, possibly in a vertical section (step down) of the deck? If so, you can probably peer in that way.
But, it's not the end of the world if it is. Just saturate the core with resin really well. A pipe cleaner works really well for this.