[cdog]

The OP asked about stationary parking:

I have done a lot of cross-country travelling in my SPF.

Typically, when I park the car, I put on the tonneau cover. This protects the car against rain, and gives a modicum of security when leaving the car out in a resort parking lot or something like that...

Now, the tonneau isn't 100% waterproof. It does leak a bit, and it's best to park the car on an uphill grade, or water will come in the back and enter the cockpit behind the seats. I've had to bale water out of the driver's side footwell with a cup.

The nice thing is that carpet dries quickly in the sun and doesn't ever seem to suffer any ill-effects.

For an occasional afternoon thunderstorm, a tonneau cover is a perfect solution.

Driving in the rain, your choices are to a) bear it or b) put on the crappy soft top. Either way, it kinda sucks. The soft top is bearable, and I've driven for a few days in a row with it on during bad weather spells.