Any recommendations for purchasing a kit to allow water hose hookups, in the engine compartment for, trailer starting? I have speedmaster drives so muffs don't work.

if you have sea strainers a easy way is to drill and tap a pipe to hose adapter to the top of strainer , if yours have stainless bodies you can weld a bung to side ( some have them already)
it is a clean way of doing it
also you can put a "T" in the water intake hose ( before sea water pump)