For example a 4 man inflatable would be ideal for transporting goods,family the dog etc if you are living in a flood plain and find yourself needing to bug out...
Myself i would need something a little bigger as my nearest water (about 300meters away!) is the Irish Sea!so a inflatable beach toy just wouldnt do it!Luckily i happen to work at sea so i think i would be heading into work and commandeering a vessel if the SHTF and i needed to bug out with family from the mainland. (obviously i would need a suitable vehicle to make it to work in but thats another post....! ) think it would take alot for me to leave my house though as i believe that you are much safer staying where you are,if your well prepared of course!
Worth remembering in what type of situation we are talking about here though...if its natural disaster type where you think you may be safer off the 'mainland' its worth remembering the weather we have had of late regarding winds and some huge tides (for example we had tides that were over 1.5 meters ABOVE prediction at high water) and the subsequent affect it has on the sea and river state,something a small yacht or rib may not be able to cope with safely.Have some photos i may post of what can happen to navigation buoys when it gets REALLY bad.....tons of metal squashed by the sea like a coke can!