I don't trust them for regular use as strapping down can bend sails (crinkled mono) and masts point-load on the board etc..... even the ones where straps go under it all, or between board and rig bits.
Then the ones that strap under it all, relies on stitching to hold it all together at 110kph. Hmmm
OK for travel, not for regular use IMHO.

So for regular use I'd keep boards in their bags and strap down well with quality straps. Then place a sailbag on top and masts next to, strap down again with another set at reduced tension, then boom again next to it or inside.

Thanks for the advice.

GunSails make mast/sail bags. I fit 3 masts/sails.
Two separate bags, and the sail bag sits on top of the mast bag. All the fixtures are well though through, so you don't press the sails with straps.
Pretty much does what Mark said above out-of-the-box.

The price was very acceptable.
I ordered mine from Brisbane a few years ago, but that shop has closed. Not sure if someone stills supply GunSails equipment in Australia.

gunsails.com/en/windsurfgear/bags/surf-bags/?SID=o3n73b1k1uh561su12u08nro76

and

www.gunsails.com/gear/bags/surf-bags/sessionbag-1155.html