Bed size?

I used scaffolding boards for my beds, but my garden gets very wet and waterlogged in the winter. They just lasted 5years.
I just have a patch now. I walk all over it I'm not very disciplined.

I am sick of dealing with rotted sided beds which are a harbour for slugs,snails .earwigs and all sorts of creepy crawlies. I have gardened on beds without sides before until I sourced material to put sides on them. In retrospect they were OK without sides and I don't know why I bothered.
I am looking more at mounded beds than raised beds and hopefully this little bit of extra height will get me above the water table?

I just watched another video where his beds were 30 inches and his paths 14 inches which apparently is standard for a market garden?

Decisions, decisions but the 2 foot bed / 1 foot path is my favourite up to now. Herring boned on a gentle slope to the bottom of my plot should enable water run off as well, although the plot holder behind me may not be to happy about that!