I am like Ifish. I would build a extension to the deck to cover them. Think like he said to many cross members and supports under the deck to just start cutting. Friend of mine just had them build him a Blackhawk and they had to build in a battery box in the front for him. They had to do some engineering to put it in and still have enough support for the front deck. First thing is put a battery up there in a box and check height to make sure you would have the clearance if you installed the extension remembering the underside of your extension is going to have to have stringers and gussets of some sort to strengthen the extension.
Proud Member of Team Geezer
Charlie Weaver USN/ENC 1965-1979