You shouldn't have loads of wires going to the battery, you could do with some form of distribution system, ie one large cable from the battery to a seperate fuse box on say a bulkhead and then have individual fuses correctly sized for the accessories.
Cable size needs to be correctly sized for any future expansion too.
Fuses must be suitable.
I started to get into that synario on our boat, over the years, adding.. oh just another... then another...with a single bolt having half a dozen crimps of various sizes. Certainly not good in a damp marine environment.
I have recently fitted a bus bar for both the positive and negative.
Now I have only one cable on each battery terminal:thumb2
Rustic