Root rot is the big issue as I see it. And to that I use raised beds, the image is 130 or so gallons with no bottom. It started with 13 plants, 4 males removed one allowed to have his way with the girls, then he too was removed. The space in the center was a Greasy Grapes clone with many seed.
Also leaves that touch each other need to be thinned to reduce the chance of WPM, I like to clean the bottom 18" for air flow under (not done in this pic yet).
Later in the year when we all have buds on, we need to watch for bud rot with this rain (I do with the plants below now)