isn't that kind of the point of a handicap? track scores over last X rounds and determine how you are going to play on your best days, which if memory serves I think you are supposed to play to your handicap like one out of five rounds or something like that...
only matters of course if you are playing competitions, and regardless...good on you being out there. arthritis is no fun.
Played with a guy Saturday apologizing for using a cart and I am sitting there thinking "you are 67 years old, not long off open heart surgery...I am just happy you are out here playing, thank you for being here"
Same for your situation...end of day, handicap or no doesn't matter, just love seeing people get out and enjoy time on the course
Not your fault if that's how it goes. The second round is washed out. That's how it'd be in our conference championship, if it was a similar situation.
Trying to find a different solution is admirable, and should remove any stain you feel you deserve (which you do not) in "winning" after only one round.
I mean, I get it, your perspective here. But that's the Rules. Congrats, preemptively, on your win, or even if you play and don't win, on a good first round.
If you want to understand what can and cannot be done with marking the course, there are couple of areas within the rules that you should look. First, the Definition of GUR. There is a lot of latitude allowed, GUR is essentially whatever the Committee decides it is, although a few conditions are GUR whether marked or not. Then look at Item 2F under Committee Procedures, marking Abnormal Course Conditions for General Play. There the guidance is to be a little more judicious in what to select as GUR. However, the first sentence might give some justification:
At my home club we have some linear depressions where loose soil has settled along the irrigation lines, but these depressions aren't very deep or sharply defined. I don't believe they should be classified as GUR, and they're not. However, for a deeper drainage swale, as @Double Mocha Mandescribes ("drainage ditches on several holes, 2 feet deep, about 3 feet wide") it may be reasonable to make them GUR.