I have ran harnesses and spoons off of Jets and inline boards for the past 7 years and very successfully I might add! I have not used an inline wt since starting to use the Jets. To much stuff to keep track of, to many things to store, the simpler the better. Remember if you are fishing in 20 ft of water and you have only 21 ft of line out then you stand a good chance of snagging the bottom with inline wts, especially on the reefs while making turns or slowing down to net fish. You only need one size of Jet diver, you adjust your depth with the amount of line out, so why carry 3 different sizes of jets? I personally use the jet 40's, less line out to achieve the desired depth. Less line out means less time for that eye on the other end to shake the hook. Jets work well at any speed!! This year I started using the tru-trip 40 deep divers they work just like a jet and look like a jet but have a trip release that works great and dive deeper quicker! Here is a link!

http://www.walleyetacklestore.com/bigfishtuff.html