I've recently tried the Rental Tournament of B/W2's PWT, & had disastrous results: Three losses, with two of them being in the first round. I then began thinking, is playing with rental Pokémon all boil down to luck & a gamble?
Since playing around with rental Pokémon have been around since, well I don't know how long... at least beginning at Emerald, if not earlier...? Share your delights &/or anguish when it comes to using rental Pokémon. Is it a blast that offers more to the playing experience? Or is it something that only results in the eventual throwing of your system/controller?
If you're one of those people that can make rental Pokémon work for you, please tell me how you do that as well. I'm hoping that there's more to it than just being lucky.