Ordinarily it is not possible to establish a suit against the
dealer’s strong trump hand, and this does away with the usual
argument in favour of returning your partner’s original lead. On the
contrary, it is probably the last thing that should be done. Your
play is to make any high cards you may hold, and then to search for
a weak suit in the dummy hand. If you lead up to this weakness, the
dealer cannot place the strength in the suit, and your partner is in
a very good position to win a trick cheaply.
After making your high cards, should there be no weak suit in dummy
to lead up to, return your partner’s lead.