As a programmer, you noticing the rope physics made my day. Thank you!
Also, yeah, I realized only too late that the sneaking should be a toggle - we did manage to add CTRL and SHIFT as alternative buttons to the SPACE BAR, but too late to change any of the dialog.
We had planned to have tons of mini-games for the various different fish, but, as ever, ran out of time. We were happy to have fit in at least three different ones (regular, ring, and the rare red-bubbles)