To all the great replies - thanks for the input, especially PAULMLAC's great details. I had bought a 45 deg clear elbow with flanges on both ends hoping to just leave it connected like RVBILL3 and LOWERYFERRIS have done. However, with the hole not being in line with the dump flange, it isn't easy to fit the clear insert and a connection without a hard turn on the hose even if I enlarged the hole. So, my engineering mind started looking at patching over the old hole and cutting a whole new hole. I decided I was making a federal issue out of a parking ticket and went for simple yet effective method. Upon further review it seems easier to cut the end off the new hose and put my old 45 deg clear elbow flange on the end of the new hose. It fits through the hole.
Additionally, to MOJOJOJO's caution to "Just go slow and do a fit Check often, check often ,and be sure to do a fit check often.
" I can only remember my dad once saying "I cut this thing three times and it's STILL too short!"