Snorlax with low CP and IV Worth's power up?
** update**
My current strategy is walk with this as buddy to collect candies to such an extent that I might power it up or get another better one to power up.
Thanks for all your opinions/suggestions.
**
I'd like to ask if anyone power up similar snorlax for defense:
Att,def,sta=15,9,1
If yes, up to what level to be reasonably useful for defense. Or better hope for another one.
P.S.: I really miss a defensive snorlax to complete my top tier defense team.

Answers
Both are the best defenders of the game.
The Snorlax have a river of HP (246hp) and no strong counters, he's just annoying to face off and will make the attacker use many potions. Body Slam is greater than HB for me, sometimes he use it twice and even some dodge fail happens (not with HB, its tooo easy to dodge).
Lapras is so fcking awesome, theres no real counters too and if you fail one dodge, blizzard will almost kill (or will kill) you. Mine have lots of HP too (203 hp) and even will be a big problem in a gym: or you face him in a hard battle with a great Arcanine, or you sacrifice some pokemon to kill him, spending revives and potions.
Overall, Lapras have better stats (except Stamina) than Snorlax and more DPS. Besides that Ice type are super effective against Grass/Ground/Dragon/Flying (normal type havent advantages) and some of the most commons attackers are Exeggutors and Dragonites. For me Lapras is the best defender at this moment and Snorlax takes the 2nd place for sure.
On pokemon as rare as Snorlax or Lapras you shouldn't really care so much about their IVs because you don't find them often enough to be able to just discard ones with poor IVs, and because their base stats are so high, IVs are less relevant.
Sure it makes a difference to the nominal CP value but that's largely irrelevant with how gyms are right now, because no one trains up gyms anymore and gyms were easy to take down anyway. The difference between your Snorlax and a perfect IV Snorlax is going to be about 100 cp depending on the level. It really isn't a big deal.
A Snorlax or Lapras with 0% IVs are still the best defenders in the game right now.
Even if you consider the time when gyms were all level 10, if your powered up Snorlax is near bottom of the gym purely because of it's low IVs, that gym is going to be so stacked that no one is going to bother attacking it anyway.
If it's near the top of the gym and it's the next pokemon to be kicked out, that means the gym is low level so the entire gym's going to be taken down anyway.
It sounds like you want to power him up - so why not take a compromise?
Walk him, but don't power him up. Once you have enough candies to power him to level 30 (or you can pick another predefined spot - just stick to it) then power him all the way up. If in that time you get a better one, then power that one instead.
You only have 14 candies. You need ~66 to power from 20 to 30 I think, and yours is far below 20 even. It will take a while to get those candies so hopefully in that time you'll catch/hatch a better one and if not then you'll only "waste" the candies when you have enough to actually make him strong.
(I'm assuming you must be over level 30 given the absurd amount of stardust :P)