since staking is equal to me bag holding that altcoin to gain a profit in that altcoin and this act is extremely risky in altcoin market, i would never do something like that and i have not done it yet. for profit i always prefer trading the pumping coins.

also:
that alone is a reason for NOT doing that because to put simply whenever any coin is giving away "free coins" at ridiculously high amounts without regarding inflation and the circulation of easily gained coins in the market, it is a 100% guarantee of that coin's price drop.