My personal preference is the 920ix with the carbon fiber shaft and the heavy duty lift assist D handle. My 920 has the 1/2" holes except the back plate, which has 1/2" holes in the upper section, and narrow slots in the lower to help catch small targets like stud earrings.
Which coil do you usually use when beach hunting? That can determine which scoop to use. I'm guessing that since you want to cover as much ground as possible, it would be the 11-inch or 15-inch coil.
If water hunting may I suggest the 920i because of the wider profile.
Dry sand and wet/damp sand I recommend the 720i for its deeper basket.
These are personal preferences.
Too small of holes will choke the basket and won’t empty/drain effectively.
The small holes or slits at the back/bottom will catch the smaller targets.