Hi everyone, I've been having problems when it comes to troweling up I've asked so many people and noone can give me an answer to why its happening was wondering if someone on here new, basically I lay my first coat on flatten it in throw second coat on dry trowl dry trowl again I get it so its hole free and most lines are out then soon as its gone qquite firm and ready for polishing I spray a little water start to trowel and I get these littles hollow dips in my finish and no matter how much I trowel them they never come out I've tried everything to stop it I've tried leaving it longer to go off, tried using no water but nothing seems to work. Its so annoying it just spoils my work. If somone could help us out would be appreciated