Hey, so I understand you asked your question last year but I just installed a ballast setup in one of our 2015 A22s and here are some pictures for those doing a 2015 A22 or A24.
The rear bags are very easy to install but will require about 4 feet of additional hose than what Axis provides. You need about 2 feet per bag to do it with an easy install.
Tools needed:
Impact/screw gun/ screw driver with phillips bit
5/16 nut driver/socket
Hose/Pipe Cutter/ Razor Blade/Pocket Knife
Silicone
Black Tape/Heat Shrink
Setup:
We use Strait Line Sumo bags for our Axis boats. I like the 1" ports on the bags that match the 1" Hi-Flo ballast lines, I also like having the spring loaded "link valve" that works to burp all the air out. Go ahead and silicone the the threaded fittings into your bag ports and snug them up. For 2015 Axis was nice enough to include the rear quick lok fittings for the PnP upgrades but you still need two 90 degree elbows and two strait connectors for the front.
Rear Bags :
Starting with the Rear fittings at the Transom, go ahead and remove the two screws holding on the plate cover. Once that is off you can use the nut driver to remove the hoseclamp holding the hose to the hard tank port. (Sorry, I didnt have pictures of this step.) Axis uses a ton of silicone on the hose holding them on, I sugest cutting a slit on the hose to remove them. Once you have this hose off you are going to trim it down. You only need about 2.5"-3.5" of hose showing so it can mate to the bag.
Once trimmed, slide the hose back on the hard tank port and tighten down the hose clamp. A little bit of Babes Seat Soap on the inside of the hose makes this very easy. Then replace that cover.
Finished rear ports look like this.
Now, you can make that line shorter, and to the point where the quick release is coming right out of the opening.. Its up to you to go shorter, just makes it a pain getting the fitting on and off. The other option you can do is notch a hole in the back of the cover. You would run your hose strait back, use a 90 degree fitting striate up, through the hole you notched and then to the bag. The advantage of htis is having the bag as far back as possible to keep the weight in the rear of the boat.
Onto the other end of the rear bags underneath the rear seats. Go ahead and use that impact and pull the screw off the hose cover again. Same thing as the rear, go ahead and loosen the hose clamp and pull of that hose. You will not be using this section so pull it off however you need. This is where you need that extra hose line I mentioned earlier. Take a 2 ft section and hose clamp one end back on the hard tank port. Because of how far up the bags sit you need the extra length of the hose to loop around and connect back to the bag without kinking.
Use a hose clamp to secure the strait quick lok fitting to the hose and use the black/electrical tape or heat shrink to cover the hose clamp.
Here is a pictures of the finished setup with the additional hose length.
The Fill hose is tucked up in the wall in the rear compartment. They actually have you a big enough cutout this year that the hose wont pinch. Just pull it out of the wall and connect it to the bag.
The front bag:
Pull your seats out and lay the bag in the compartment. This one is easy enough to start at the rear drain hoses.
Just take your hose cutters and trim them up so you have a little bit of hose showing, and hose clamp your Strait Quick Loks to the hose. Tape over the hose clamp.
The two 90 degree connections will be going into the two ports near the nose of the bag/boat. Reach up under the seat towards the nose of the boat and find the hose line. Careful and watch for fiberglass splinters.. the suck.
This hose line has a barb fitting, cut the hose on either side of this seam. Hose clamp a 90 degree fiting to each hose and connect to the bag ports. The one on the Port side is your fill line and has a Check valve installed on the hose. The starboard side hose is the vent and goes to the thru hull fitting.
After that, head to the lake and enjoy your newly weighted boat.