When something absolutely has to be done and cannot be put off, use the adjective imperative. Imperative is from Latin imperare to command, and its original use was for a verb form expressing a command: Do it! is an imperative sentence. It's still used that way, but it's more commonly applied to something so pressing it cannot be put off: Hiring new workers has become imperative..
1 A tandem (dual) axle utility trailer starts at $1,200-$3,000 depending on size and weight capacity, and it can cost $4,000-$7,500 or more for commercial-quality utility trailers.
1 Canoe or kayak trailers cost $600-$1,500 for a single-boat trailer and can cost $2,000-$5,000 or more for a trailer with racks to hold six or up to 20 canoes or kayaks.2  For example, the aluminum Trailex UT-1000-6-04 canoe trailer can hold six 18' canoes, has a 1,000-pound capacity and lists for $2,529. A lightweight or economy-model single-axle boat trailer 14' long or shorter can cost $700-$1,100 or more, depending on size, weight capacity and materials (aluminum, galvanized or steel), for use with lightweight craft. 2  For example, DirectBoats.com offers an Economy Fishing Boat Trailer for $720-$800.