35 is too old for skateboarding if you are not athletic
My Skating Pain
I grew up on the west coast of California. We surfed and skateboarded in empty pools and ruined everyone favorite park benches. Skateboarding is brutal. I broke my collarbone twice before I was 15. If you aren't athletic and have no co-ordination related to skateboarding and rollerblading, there's no point in doing this. Now that might be easy for me to say because I had the opportunity to do it for years and years in the 80's. I wore my Dead Kennedy's T-shirt and believed in Anarchy. My knees were, and still are, a disaster. I've had 5 cracked elbows. Quite a few concussions. I went off a curb once, hit a little rock that locked my skakeboard up and went headfirst into a car bumper. Cracked my cheekbone. That was really fun. I cracked my elbow and gave myself and nice spiral fracture grinding my trucks on a curb when the skateboard caught. Other injuries include several broken noses, lots of cuts and scrapes. Constant cuts and scrapes. Broken tail bone, 3 times. Bent my thumb backwards. Cracked two teeth on a sidewalk. Water on the knee many times. Torn ACL. Hyperextended my right knee twice. Many pulled hamstrings.
Surfing Pain
Not near as bad as skating. but I was a chicken when it came to really getting out there. Not a fan of large bodies of water. BUT, I did get drug along a reef a few times in Monterrey.
Surfing can be just fine. Just don't go out and surf on shallow reefs. If you go down and have the wave pull you along the top it can be pretty brutal and bloody. I have friends that now wear rock climbing helmets while surfing from getting so many scalp cuts. Certainly it's not cool but when your 35 plus, who cares. Just ensure that there is sand beneath you and you will be fine. Perhaps get too much saltwater up your nose or some sand in your eye.
Conclusion
Skateboarding has brutal injuries for the young and old. It does not discriminate. When things go bad, they go bad....especially if your a novice and you can't anticipate the movement, which makes it worse.
I skated for years. I will not skate anymore. I don't need another broken colar bone. I don't need to fall and land on my tail bone. I don't need to hit my cheek bone on a parking block.