You can use the Einbock tine weeder from pre-emerge to laying by. In pre-emerge the weeder destroys 70% of the weeds by covering them with lose dirt so they can’t grow. Others are pulled up. The time of day- sunny - is best.
The Einbock tines are very durable. The wear depends on your soil type and use. They often last 3-4 years before they need replacing.
Not if you use it at the correct time. You can use the weeder at blind cultivation or after plants emerge. With the Einbock you can adjust the downpressure with one lever
The tines not only get in between the rows, it gets in between the plants too.