Re: what do you do to make your boat more safe?
As stated before ( and a couple on new ones), a second bilge pump with it's own discharge plumbed thru hull and fused power feed, a second bilge blower on it's own power feed and switch, extra fire extinguishers, Halon automatic extinguisher system, well stocked first aid kit, upgraded nav lights to more powerful 2 mile LED's, 2 VHF radio's, one for ch 16 and one for chatting, high capacity manual portable dewatering pump, Xtra PFD's ( I use Mustang PFD's, not the Walmart ones, as folks are more likely to wear them if they are comfortable and don't look dumb), extra anchor, line and rhode. extra throwable PFD (life ring) w/ retrieval line. The second bilge pump, blower and radio are powered from the second battery, so they are independant from the primaries.
Be sure your fuel fill, engine feed and vent line are in top notch condition.
Ensuring all passengers pre-fit PFD's and know exactly what to do in an emergency BEFORE leaving the dock. Everything is mostly common sense. I also have a towing bridle ( can use the extra anchor line with it) on board in the event someone needs a tow to safety.