He put it out there so I don't feel bad about commenting that the Mako bag is a good way to get your gear smashed to **** by the baggage handlers/conveyor system over multiple flights. You need something with some protection, at least a hard bottom - maybe wheels?
No need to advertise to every potential thief the contents of the bag either. My buddy has a scuba dive bag - it protects all his gear but we can always see it coming on baggage carts at smaller Caribbean airports - I don't think they could've made the label any bigger if they tried - it just screams expensive dive gear inside.
I have a big tennis bag, it still fits inside the checked bag requirements the outside racquet pocket (square not racket shaped) just takes my xl fins plus all my gear. It's also under 5 lbs, I reliably carry something from my buddy to help him get under the 50# limit - sometimes more on the return if his wetsuit is still damp. We actually carry an electronic luggage scale to ensure we're both under the limit - one excess baggage charge will more than pay for it - a good one is about $30.
The bag itself has wheels, a telescoping handle, is basic blue, double sewn on the handles etc. Also cost me all of $40 - ten years ago. It's gone on every trip I have to a lot of the Caribbean and Hawaii - probably 2 dozen or so. One downside is packed it will not stand on end and will fall backwards hitting the guy behind you in line if you try. I have a clamp that allows me to clamp my carry-on roller to it for transport then I check it curbside or the first place I can.It has one inch long rip in a non-stress location - otherwise it's held up really well.
In the roller I carry loose regs, mask in box, boots, full HD video setup - 1-2 change of clothes, 8" tablet with keyboard, plus travel documents etc. If I have to gate check it, I pull the documents and tablet and let everything else go.