My words can't improve on the great advice already given, but my image below shows the shore entry conditions at Red Slave. Sites will vary, but this will give a pretty good idea of a typical shore entry in Bonaire.
Typically, I donned my gear plus "surf mocs" instead of dive boots and, with fins in hand, walked across the loose coral rubble and waded through the gaps between low coral heads. While bracing against some mild waves, in only a few steps the water would get deep enough to allow me to lean over and submerge my head and mask to look for clear areas to walk and/or to don fins.
I always use a snorkel, but that's personal preference. I would often finish a long dive with some snorkelling because I loved being in the water! In the north and south ends, the waves occasionally kick up to 2-footers, so I found the snorkel especially handy while scouting the shallow water for a walking path through the coral heads.
Thanks for giving me an excuse to look through some of my 1600 pics from that trip!
Take a bunch of pics, you'll be glad you did!
Enjoy!
A fond image follows.
Dave C
Red Slave, Bonaire, 2003