I once took my little Bombard SIB to Italy with its 4 HP Mercury motor. Launched on the beach in complete ignorance of VHF, flares etc but did have a Life jacket. And this was in 1988 way before mobiles. Sailed out for a couple of hours. Waved at the local Eyties, Had to cut my anchor free when it got stuck and managed to get back to the same beach again.
The way I look at it is a SIB will never sink as long as you don't pop it and YOU can row it back to shore because its that small.
Oars/Paddles on RIBs are a bit of joke.
Get a friend to go with you on any journey. Take a VHF, take a Mobile, join Sea start, anything is possible. Take an anchor so you can stop yourself drifting whilst you sort out what your going to do next.