Three washouts in four games have scuppered Fletcher's hopes of testing his inexperienced squad at the highest level, but he said allowing some players to return home to play for their counties was not an option.

"It's important that we play some cricket," Fletcher told reporters after the fourth one-day international in the seven-game series was washed out in Grenada on Wednesday.

"But the guys that are not playing are really covering for someone else. They could be needed, so we can't really let them go home."

After England's two-wicket victory in the opening match in Guyana, both games in Trinidad were washed out last weekend. More rain is forecast for St Lucia, the venue for the fifth and sixth matches in the series on Saturday and Sunday.

"The difficulty is that we have to be ready to play some form of game at an hour's notice," Fletcher added.

"We wanted to have a look at everyone in this series and we haven't been able to, so we haven't learned much.

"You take a guy like (Anthony) McGrath who hasn't played a game all winter. We can't get the guys experience."