71-1-302. Policy. Because the financing of homes and business expansion is essential to the development of the state of Montana and because financing of homes and business expansion, usually involving areas of real estate of not more than 40 acres, has been restricted by the laws relating to mortgages of real property and because more financing of homes and business expansion is available if the parties can use security instruments and procedures not subject to all the provisions of the mortgage laws, it is the public policy of the state of Montana to permit the use of trust indentures for estates in real property of not more than 40 acres as provided in this part.