I do not put too much money on altcoin that I do not think have potential to grow in the future. If ever I put something on a P&D altcoin, it is very minimal. This will allow me to put bitcoin in and wait for the next pump before I dump that coin. So far, this strategy is working for me.
It is always good to do arbitrage trade but certain times the transaction delays will hurt your profits.First and foremost thing you have to notice while trading is the volume of the coin,i did make some mistakes in the beginning and i was a bad holder and with experience i learned how to trade and make money,i did hold those coins for a longer time and sold off at a loss knowing that the price wont increase again.