Sleights with coins can and should be adapted to both hands. I'm right handed but I've been told by a high respected magician that the classic palm should be performed with both hands. Ever since then and very little before, I've been practising the classic palm and the muslce pass in both hands. After when getting the Harada hold down enough to perform it without any struggle, I think I'm gonna try it with my right hand. I think that, after doing a sleight with one hand long enough it becomes alot simpler with the other hand. That's what I personally came to relise.
Have a Good One!
learning every sleight in both hands is pointless...
classic palming a coin in both hands is essential, just like palming a card in both hands is essential.
but practicing the harada hold in both hands?
anyway, the hold is in the hand that receives the coin.