There are many ways to do storage in the V Berth area, including hammocks on each side, and bungee cords x across the overhead with footman loops screwed into the underside of the deck.
I used that area under the bunks on our last C Dory 25 to put 200 amp hour of LiFePo4 batteries, and a 2000 watt/80 amp/50 amp Victron PSW inverter. Also extra anchor lines and storm anchor. (Fortress broken down)