sentences:  There appears to be a variety of reasons for this decline including difficulty in obtaining permits, physical difficulty of harvest work in swamp areas, and undesirable creatures such as scorpions, snakes and bats making their homes in the thatch.It appeared that most people generally now prefer to use tin or plastic as their roofing material since it is relatively cheap and much easier to obtain and use than the "Manicaria" palm.The process of harvesting "Manicaria saccifera" leaves and using them to build a durable roof is a complicated process which requires a great deal of knowledge, effort, and skill.