I along with my son using Zodiac kind of 10' inflateable for the last four years with a small gas motor. Never had a problem. With hardfloor I don't have any problem to stand and fish. However, always put my lifejacket and other safety measures on and remain in small waters. I always keep an eye on weather condition as well. As regards almunium boats, no one can guarantee that those will not sink. But remember Zodiac kind of boat are expensive. It is good to have one if you don't have space to park your boat.
Regards
Sardar