try ebay
for example:
http://www.ebay.com.au/itm/like/131459674015?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=107&chn=ps
Make one. Go to your nearest chanldlery and get a few meters of spectra and 3 pulleys, as well as 2 saddles. Also a pool noodle or 2 for kmart and cut them up.
Cheap, nasty but effective!
Supsoulrider, I bought the o&e version and currently have a 10'x32 and 9'x 30 in their covers hanging in it. No worries. Easy as to install. Cheers.
Supsoulrider, are your 11' and 12' boards race type or cruise type? Please ignore my ignorance of everything not surf sup as that's all I have. As stated, weight wise shouldn't be a problem, but the o&e straps are a tight fit around my boards as seen in the photonand I'm guessing wouldn't fit around 2 race type boards. I may be wrong but you might have to get some loner ones if they're race boards??
Ones a race and the other one is an all rounder
I think I have decided to go with two hoist but if I did get one where would I get bigger straps?
Just buy a (cheaper) set of tie-downs. I bought a set from a bargain bin at one of my local retailers and when I explained what I wanted them for they even cut them down a bit for me with their hot knife.