In all honesty? No
Maractus has pretty bad bulk - 75/67/67. That's about the bulk of a Castform. And we all know how useful that is normally.
Unfortunately, due to your low speed and defence, you probably won't be able to get up a Cotton Guard anyway. Even if you did, there are a plethra of Pokemon which can still kill you. Using your set, anything along the lines of Heatran or Mega-Venusaur destroys you., which are both very, very common Pokemon, and there will probably be a good chance he will run similar OU Pokemon if he plans on playing seriously. Taunt, Magic Bounce and Magic Guard also shut down all your plans.
>0 SpA Heatran Lava Plume vs. 252 HP / 0 SpD Maractus: 302-356 (85.3 - 100.5%) -- 6.3% chance to OHKO
>0 Atk Maractus Bounce vs. 232 HP / 0 Def Mega Venusaur: 90-108 (25 - 30%) -- guaranteed 4HKO
So in all honesty? No, it wouldn't make a good troll unless you're trying to make your friend forfeit out of feeling sorry for you P:
It would be better to go use a Standard wall running Toxic + Healing move. That works better than Maractus, and fulfills the exact same role (There are heaps, just try Blissey or Chansey if you can't think of one).
Now to your other question
>Are there any good never-ever used Pokemon trolls?
To be honest, there is a reason they aren't used. And that's normally because they're really, really unviable, and using them in any matter, let alone a troll manner would put you in a seriously disadvantaged position. You could however, try bring back something like TormentTran from Gen 4 or Gen 5 Whimsicott which were all very, very annoying sets.