With experts across the ocean like VE1ZJ, W1TAG,W4DEX and NC1K ( working
on his LF antenna)it is only a question of time before a normal manual
CW  qso takes place between Europe and America /Canada on 136 khz and
possibly 73 khz.  I work some amateurs on 136 khz with big signals from
EU, these signals are much stronger than anything that I hear from the
UK except MM0ALM in Scotland.
I do not think these strong signal stations work very slow computer
generated cw at 90 second dots etc and therefore are not being heard
across the atlantic.
I wonder if it could be arranged for someone across in America/Canada to
listen for these stations.
73 de Mal/G3KEV