Ryan,
Yes, we do have sister ships. I just wanted to be sure because some 38-200s have an engine near the galley. You , too, have discovered one of the design flaws in our boats. I can tell you what I did to pass what I recall as two 8 gauge wires from the panel and battery compartment to the port side for the refrigeration we installed 2 years ago. Not elegant, but it works.First, I passed it through the tube to the forward part of the bilge along with the radio antenna coax. If you can't pass a fish tape, you may try to detach an end of the coax and if there is enough length on an end or if you can extend it by butting another wire with tape use it to piggyback a smaller pulling wire or your big wires. Don't take the coax all the way out unless you have added a tail to it. Then draw the coax back into place while pulling through the bigger wires or a pulling wire along side. With smooth taping, this will help overcome the rough spots in the tube.
Next, I passed the wires aft in the bilge over the fiberglass stringers by "burrowing" at the base of floorboards on the port side with a Dremel tool burr, so that I could tuck the wires beneath the floorboards, above the stringers out of sight along the port side of the bilge. I only carved out deep enough slots to bury my wires away from the bilge cover boards. Then I covered those wires in their niches with a bit of silicone. The only place the wires show is forward of the mast where they cross the bilge. I suspended them from the underside of the floorboards with cable ties so they don't hang down.
If you find a better way, please let me know. If I ever replace the floor, I will include a good passage for wire or hose from starboard to port.
Mike