Dip916 said..
rescue services are there to save lives, not your toys. If you count on calling for help, the one time you need them they might be busy off rescuing someone who....
...is really stupid and jumped off the rocks and broke their neck, got swept into the sea while fishing in some ridiculously notorious spot, or is simply an ignorant muppet who can barely tread water but gets caught in a rip outside the flags.
I can confidently freestyle swim 2klms (in about 35mins), and would easily swim a few kilometers home from anywhere within, say, Botany Bay, but if I carried a phone on me (which is a good idea if you ask me), I wouldn't hesitate to call for help if I wanted to "save my gear". I might call my mum, but most likely I would get to shore somewhere and sheepishly call my wife to come collect me (perhaps many hours later).
If I couldn't make it back to land because I was sailing in the ocean, then I would use a mobile phone to call emergency services for help. There's no shame in that.
Best bet, is learn what you need to do to save as much of your gear out there, tie it all to your board and paddle in like I've seen plenty of others do.
Try and keep your gear in good condition... I imagine masts break a lot, so a new RDM every couple of years is good peace-of-mind, as is a new uni every 12 months. Also, check all your ropes... outhaul etc and keep spare rope with you when on the water.
Again, there's no shame in calling for help or waving someone down if you're in trouble.