Like me you most likely struggle to read your GPS's out on the water and your arms just aren't long enough to get things into focus.
For the last year I've been using safety glasses for work with built in reading lenses (looks just like bifocals) and they work brilliantlly (apart from when walking down stairs). This also ended up being a boon for they guys in our workshop who also needed reading glasses as they can leave them on when moving around.
Unfortunately trying to read the GPS after a run is generally taking a rough stab at the shape of the blurry numbers, quite often wildly inaccurate.
Doing a search for something else I found that there is a polarizing sailing version available now.https://www.whitworths.com.au/gill-sense-bifocal-sunglasses-1-5-black
I'll give them a go and offer feedback as to the results.
Thats even too rich for me for skiing! 
I can't see anywhere if they save the GPS file for later analysis.
Thats even too rich for me for skiing! I can't see anywhere if they save the GPS file for later analysis.
Very relevant thread Alby given windsurfing seems to be an old fart's sport these days.
i previously got a pair of single vision prescription sunnies via an online shop. They were $40 Cancer Council frames and worked great, until I lost them (on shore) at Fangies the other day (there's something about Fangies, I've also managed to leave my thongs and downhaul puller behind there 
). So I recently got a pair of generic Specsaver branded plastic frames via the local shop (no doubt OPSM etc also do similar). What I was very surprised with was their quote for multi vision ("graded") lenses. Usually that's a few hundred dollars out of pocket,but with the SS deal plus private healthcare rebate, it was less than $100 cash. Very happy with that price and they should be good for windsurfing
If you don't want to risk loosing a pricey pair of glasses, invest in a new Motion GPS. The screen font is sufficiently large for me to read without my usual +3 glasses.
Just bought some fuglies with prescription lenses. I'm not allowed to drive without glasses but have been windsurfing without them for years. Used them last week and it was great, could see the waves much more clearly, recognise people on the water and discovered those black lumps of weed were swimmers heads. Surprised how wrinkly the other sailers were, hadn't realised they were old too. They are polarised and uv protection as well as safety glass. They were a bit expensive but well worth it. Could even count the kites on the beach as a hord arrived.
Thay sound like great options! 
I would need a very good tether though, as I regularly lose my $10 sunglasses in stacks! 
Select to expand quotesailquik said..
Thay sound like great options!
I would need a very good tether though, as I regularly lose my $10 sunglasses in stacks!
Hey Sailquik, i wear my prescription glasses everytime i sail. Had many epic stacks.. mostly when i thump a sandbank at full noise. Always hunting the flat stuff n running 51cm fin = plenty of close calls. My Ocean n Earth bucket hat with chin strap keeps my glasses on no dramas. Catapulted so hard in TC OMA i snapped my alloy boom clean in half. Glasses stayed on no problemo!!
Wow! Either you have found the holy grail. or some sort of magic!
I have no luck with keeping sunnies beyond a few good crashes. Maybe is my stylish face plants.
Sailquik, NO MAGIC HERE!!! when im stackin it i always to hang on to the rig, jump a bit as im getting slung n roll onto my back.... Hehe Try to make it look flashy but somehow it always ends up lookin splashy???
Select to expand quoteolskool said..sailquik said..
Thay sound like great options!
I would need a very good tether though, as I regularly lose my $10 sunglasses in stacks!
Hey Sailquik, i wear my prescription glasses everytime i sail. Had many epic stacks.. mostly when i thump a sandbank at full noise. Always hunting the flat stuff n running 51cm fin = plenty of close calls. My Ocean n Earth bucket hat with chin strap keeps my glasses on no dramas. Catapulted so hard in TC OMA i snapped my alloy boom clean in half. Glasses stayed on no problemo!!
Sailquik i can back that up, he crashes and breaks stuff all the time but his glasses remain in tact in place all the time
Select to expand quotesailquik said..
Wow! Either you have found the holy grail. or some sort of magic!
I have no luck with keeping sunnies beyond a few good crashes. Maybe is my stylish face plants.
Get the optometrist to drill a small hole in one arm. Use fishing line to attach a glasses leash to the arm. tie the other end to your buoyancy vest or somewhere secure.. Fixed.. Even if they come off your face they are still attached so you don't lose them.
I started doing this after losing a $500 plus multifocal polaroid pair .
