Driftwood..I feel your pain. Catching fish is a PITA!
You know, if you go with a cheaper made net, they do have bigger holes. theres a place, Job Lot, that is a cheaper 'everything' store, they sell food to hair products to pillows. And they have a pet section, and my mom bought me a net in every size for Christmas..Best nets ive used...
I also lower the water..less space to swim!
I find fish always know theres a net..Its more about how much the care its there. My guppies will swim right for the net/cup..forget water testing, their all trying to get IN the tube! But most fish dont want to be caught, save some bettas. Re-catching fish is one of the reasons i havent added more fish to my big tank! Lol