iPad LCD Protector during repair

Hi,

I run a small repair shop and have found that whenever I do an iPad repair, even with latex gloves on, i still manage to get marks on the screen - which is a massive downside for customers and has even cost me a new LCD before.

I have got new LCD's with these screen protectors on that dont leave any residue or marks and have protected the screen during repair.

Is there a way of getting just an LCD protector during repair without it leaving any marks?

If not, how do you protect the iPad LCD?

Thanks in advance