We have a Passport 41 - S/V Pekina, she is also a pig in reverse, hard to know exactly which way she will go when backing down under power with any speed.
I knew this going in, mainly due to the fin keel and skeg hung rudder setup. You need to get your "Back and Fill" maneuver down, it will save your bacon. You can search for videos and instructions on youtube. It works pretty well and is easy to master with some practice.
Go out and perfect it in calm open water until you can turn the boat around in her own length with confidence...you will need this skill. It only works in one direction and that needs to be factored into any docking plans (think plan B).
Next, always think through any docking or departure carefully noting the wind and current which can/will have a big impact on what you need to do and when.
Have a plan B worked out if things go wrong.
At our slip we have a fixed rear spring line that we leave on the dock. We grab it with a boat hook when coming back in then drive the boat onto the spring line and into the dock with a hard over rudder and forward idle. If your spring line pivot point is correct she should lay up and stay there while you secure the rest of the lines. We never jump off the boat!
After any docking, good or bad, we celebrate usually with vodka tonics!
We love our Passport!
Given the rest of her qualities we can live with and/or learn to manage her poor performance while backing down.
I am sure some of the other long time Passport owners may have other tricks to share.
Ross