In your original post you mentioned getting a generator. A hard start cap, or a soft start device may allow you to go with a smaller generator. BUT as already pointed out, if you spend a little extra to get a generator that doesn't need one of those devices, your overall experience will likely be better because you will have plenty of power for anything else that may arise. We purchased a 3400 watt generator that allows us to use our RV pretty much any way we wish without worrying about power.
Also as was pointed out, the place those devices really shine is on questionable shore power.