Post pics of the deck. If you have removable deck panels, you may not have to cut up things to get to the livewell plumbing
Many times boat builders rig and plumb the deck before bonding it to the hull
Sometimes they rig after they cap the hull
Can you see the livewell drains and supply fittings? The pump supply and discharge? Does the angler have a seachest?
Are the fittings white plastic? Or are they dark grey or black with what looks like fiberglass strands in them?
Is the visible hose white or grey with reinforcing, or clear?