All,
Thanks for the advice, I have a good idea what to waste my money on now ?. I have done some days simply dragging brash and yes it's hard graft to say the least. But for me personally, I tend to feel ok after these hard days. Last weekend I was running in the mountains for over 11 hours, right through the night. I was supporting another runner, carrying his water and kit. The hard work is not a problem and as for money I didn't get a penny, but I wouldn't have it any other way.
In contrast after just one day sat at a computer I am in a lot of pain, shoulders and traps are screaming at me, the body is designed to move.
I've lived in a campervan for 2 years, through a cold, wet, stormy winter in wales, where it go so bad I had to point the van head to wind, otherwise it would have blown over. I didn't earn enough money to even turn the diesel heater on at night, so I would sit in my down sleeping bag and listen to the radio. I'd still take that over dying in a 9-5 job to pay the morgage.
Yes, I am looking to move away from design engineering i.e. CAD technician and into arborist work. Either as a part-time gig or for a total career change if it works out.
I have already looked into land surveying (1 year) - This profession is becoming more and more about processing the data on the computer and less about being out in the field. I can only see it continuing as the use of laser scanners/drones become more common, which basically do all the field work for you.
As for design engineering (3 years) there is a shortage of good CAD technicians, so the money can be good, but I personally find the work very boring, extremely computer intensive and it's easy to become pidgeon-holed as the guy who produces all the technical drawings and models, these drawings get passed to the fabricators who actually build the thing, so you don't get the opportunity to practice your hands-on skills.
Rock climbing/mountaineering (10 years), I've never tried to make any money from this. I know it's long hours for not much pay and you really have to be very well qualified (MIA) to stand out from the crowd and get the good jobs, which are still 90% hard work. Besides, I'm not really a people person.
Anyway, thanks for the feedback.
Edit: typos