I enjoy your creative builds and I have built two springer hulls, one wide and one narrow. Both are powered by Graupnner Hydrodrive units, that I find reliable but noisy, just like a Springer should be. Although I live near the Mississippi and Missouri rivers and interest in R/C tug boats is high, the Springerd design has met mixed reviews. It seems the kids enjoy the look and performance of the Springers, as they slosh around. The older model makers don't seem to get it , that the boats are just for fun. When my daughter teaches me how to post pictures, I will.