Complex sentence: The club joined the Dorset & Wilts leagues in 1994 and withdrew when it found that the travelling involved was too time-consuming to players and too costly so able to rejoin 7 years later in 2001 when the leagues were re-structured into North Wiltshire and South.
Split into simpler sentences: The club joined the Dorset & Wilts leagues in 1994 but withdrew as the travelling involved was too burdensome. They were able to rejoin in 2001 when the leagues were re-structured into North Wiltshire and South.