I think that sometimes ditching your board is necessary, however i do not praise the thought of doing it regularly or within 15 feet of another. I always paddle straight out and duck dive the whole way. But it doesnt matter how good or bad you are, when you have 5 ft. + waves breaking onto a knee- waist deep low tide sand bar. There's no way to duck dive it without drilling the tip or fins of your board on the sand. In this case though i never let my board just go. I drop down to the bottom and hold closer to the tail of my board (on the leash) and keep it from working someone.