Spent more time than I should of this past weekend, and took some heat from the Admiral.
I swapped my Aluminum zincs for Magnesium zincs.
I swapped out the ribbed style bilge hose for some nice thick smooth wall stuff.

Also doubled up the hose clamps on both ends.

Added a second 1 1/4" SS thru wall on the port side for the second bilge pump. Like the first one, I sealed it with 4200.

The second bilge pump is a Rule 1500 Automatic (built in float switch). The raised area of the bilge meant for screwing down bilge pumps and float switches was getting crowded, so I rigged up a bracket at a level about 1" higher than the primary bilge pump. This way the pump will only kick on when the primary pump can't keep up, and has the added benefit of keeping the pump above any cr@p in the bottom of the bilge that could foul it.
(Couldn't find a stainless bracket, so I gave a regular sheet metal angle iron bracket several coats of enamel, and used SS mounting hardware. Again, I used 4200 on the screws mounting the angle iron to the fiberglass.)
Here's the pump installed.

Last year when plotting all of these upgrades I came across an Aqualarm Bilge pump monitor. The monitor had a considerable list of features, including audible alarm, digital read out showing running time, on board switch for test (manual), off, and auto, as well as on board fuse.

I snagged one for less than $30 shipped, and was thrilled as they retail for $149 (less 15% if you buy direct from the aqualarm.net website). When I got it, I was less than impressed. Check the flip side.

Not ignition protected to say the least. I boxed it in some starboard, and temporarily installed it. Time will tell if it rates an install more permanent than velcro.
My plan is to wire the back up bilge to the group 24 combo cranking/deep cycle battery, the primary bilge will be on the larger group 27 combo cranking/deep cycle house battery.
While on the subject of dual batteries, I installed a second battery tray.

Added a second ground wire run direct to the engine block. Pre-wired the Blue Sea Systems "Add a Battery" ACR and Switch.

And cut more holes in the boat!

BTW - you now see two circuit breakers in the above pic, I added the second one to protect the power wire run to the amp.
The "Add a Battery" ACR and switch are both ignition protected. This allowed me to face the ACR inward to the engine compartment, to keep a cleaner look. This did cost me a few trips to the hardware store, and some fiberglass 'rash' on my forearms, but otherwise was worth it. Here's the holes all filled.

And a pic with the Sunsport seat and panels re-installed and buttoned up.

Also gave the boat a bath, cleaned the seats and interior surfaces. I'll give it a wax and drop it in the water next weekend. The final piece of the upgrade installation of the 10" Polk Audio Momo subwoofer requires that I build a custom enclosure - more to come, but don't hold your breath!