...one thing you will soon learn about Bonaire......LOGISTICS! Diving Bonaire is a LOT of work, in a warm/hot/arid/bright sunny/no shade environment....honestly, having been there twice, I have no desire to return...the diving was pleasant but very bland, low-voltage diving, combining that with the 'workout' of shore diving the payoff just isn't there for me. You'd better love schlepping dive gear/tanks/weights back and forth all over the place...on a good day all that was a pain in the azz, and now you're combining that with the extra workload of chasing after/filling 'custom' tanks.....again, as a Bonaire newbie, you can't really appreciate what I'm saying until you've gone through it the hard way, just as I did. BTW, on my 1st trip, I tried to dive independent AL63's (I brought all the 'kit' to dive that way) but after a couple of dives I gave it up and just dove single AL80's like everyone else.....they were heavy as sin, and I never could get my hands on enough AL63's to keep myself consistently supplied (I needed 4 per 2-tank truckload).....didn't even want to screw with independent AL80's instead...sure, those were available, but even heavier and most Bonaire dive sites have very rugged/bounder-strewn entries/exits, with urchins/fire corals/waves further complicating things....getting in and out of most areas was challenging enough on single AL 80's...shore diving Bonaire's rocky coast in doubles SUCKS! Plus, your dive buds will all be ready to go diving with their single AL 80's at the drop of a hat....you will quickly annoy them as being too 'high maintainance'...you will be the one slowing down the team with your special gear needs. Yeah, I know, you probably still don't believe me....you'll see.......