Well honestly the tek I posted is as easy as I'd like to go...
Naphta STB is not the best tek for extracting, but it works well enough for MHRB.
Of course you can get much bigger yields going the xylene/FASA route, but you end up with fumaric salts which then first need to be converted to freebase, if you'd like to smoke it. (which realy is also very easy).
I find washing just takes too much out of the yields, although you certainly can try to recrystalise your DMT a few times to "clean it up", I find leaving it some roome to breathe for a few days gets rid of as much crap as I find the need to. With the right smokeing technique there is nearly no taste to the smoke.