Activity holiday, one parent. Any ideas?

[PhilODox]

My children want to go away and do things like learning to sail dinghys/lasers, canoeing/kayaking, snorkeling etc, the sort of thing mark Warner and neilson do.
However, DH has been ill long-term, and I do not think we would get any insurance for him to travel to any of these places, if he's even well enough to travel, or free from hospital appointments.
Are there places that are decent value for one adult/2 children?
Neilson are fully booked in any case for the dates we can go (beginning of august).
Or, alternatively, are there places in the UK that are warm enough to do these things, where he wouldn't need specialist insurance to travel (he wouldn't be doing any activities!)?
All suggestions welcome, our budget is reasonably strong, but not limitless (so forte village in Sardinia not possible- £10k for 7 days aug last time I checked!)
Do club med have decent instruction in English? My children's French is too basic for learning to sail/surf I fear.

Sorry- should have said- they're 11 and 8, 8yo isn't a fantastic swimmer, but I am assuming that any sailing/canoeing is done wearing a buoyancy aid?

Sorry you're having such a rough time
I've heard great things about here
http://www.peligoni.com

Have you considered a PGL type holiday? I know they are usually seen as school holiday type centres but they also take individuals for holidays too

I've looked at these guys before - any use?

These are good value, especially if you can travel short notice or out of peak season.

www.alpineelements.co.uk/beach-holidays/greece-holiday-deals.html?gclid=CNXx9Pb2tdQCFU2RGwodwiEA4Q

Have a look at alpine elements

Not quite the same weather wise, but you could do all of those things at Center Parcs. Also Kielder.

Here www.responsibletravel.com/holidays/family-adventure
Have lots of nice places, I looked seriously at their Greek holidays and the French Alps look good too.

Perhaps you could stay in the UK and with the saved money from less travel, you could spend more on activities which sound like the main attraction for the kids :)
How about somewhere in or near Cornwall?

There are also good watersports options in Devon, not quite as exotic as Sardinia I know

Oh, thank you! Lots to investigate here
I didn't know about PGL, thought it would be schools only.
I think weatherwise the European ones may be a better bet.
Thanks so much.

Haha, sorry lor, yes, we have had very lovely holidays in Devon before now.

Eurocamp have sites where there are lots of activities and you would pay a single price for accommodation rather than per person. If there's no availability through eurocamp you might get lucky booking direct with the site. We go to la garangeoire but I'm not sure if the activities they off would suit your children. Would be worth a look though.

*offer not off