A synthetic turf field is a large investment for any organization, and you want to make sure that you are getting the best application for your uses. While a synthetic turf field, in general, presents many benefits for its users, the specific systems also provide benefits based on the use.
A slit-film fiber system is a true workhorse. The slit-film fibers are prepared to sustain significant activity, with great durability. A slit-film field is ideal for a multi-purpose field, to be used by multiple sports, especially football. For a field hockey/lacrosse application, a slit-film fiber is preferred, assuming that the hockey athletes like a quicker ball speed. As the field gets broken in, slit-film fibers will cross hatch (think a natural, high-performance Bermuda grass field) and create a C-cup shape. This condition makes for a quick surface and also has the benefit of encapsulating the infill, which reduces maintenance hours and cost for the field.
Traditionally, monofilament fibers have been recommended and preferred in soccer-specific applications, or lighter-use facilities. The main reason mono performs better for soccer is the fibers tend to stand vertically longer, which translates to a slower ball roll and a more natural feel when it comes to ball to surface interaction (think a natural, high performance blue grass or rye grass field). A potential drawback that you may experience is more rubber splash. Monofilaments can be used in football/lacrosse applications when participants prefer the look and added aesthetic of the more grass like fibers.
Your field consultant should be able to walk you through more specific details and benefits of one system versus another, and what would be best for your intended use. If you have any questions, feel free to contact The Motz Group at 513-533-6452.