This document proposes a "Linear-Pilot Process Model" that combines elements of the waterfall model and prototyping. It is intended for situations where a software house has expert but few developers, the client is new but mature, and the deadline is flexible but the client wants a dummy of each phase. The model aims to address the lack of reversibility in the waterfall model by applying prototyping in each phase. An example is given of a client who wants to see dummy projects of each phase from a small but expert software house.