Let's make sure we are talking about the right pump. From what I can find on the internet the Rule 207f is NOT a 2000 GPH pump, it is rated at 1200. Here is the Rule web page: http://www.rule-industries.com/prodInfoApp/servlet/DisplayItemDetail?itemId=207F&catalogId=Marine&cat egoryId=RMLVA&typeId=RFSMC
Is that the pump you are using?
That is what is known as a "centrifugal" pump. The impeller is a very simple sprial vane looking thing that does NOT make physical contact with the pump case. It spins the water very rapidly and the centrifugal force pushes the water out the side.
It is very unusual for such an impeller to be "gone". What is common, however, is to get a small bit of debris stuck in the vanes which will render it ineffective. Small debris can pass through the pump okay, but a long stringy object will wrap up in the vanes and reduce its output to nearly nothing.
For this reason they often make the pump easy to take apart. If the output drops pull the pump apart and remove whatever is inside.
Another thing that confuses is me is that in your original post you said "The pumps seem to be working fine in reverse". A centrifugal pump is NOT reversible! They will also not hold water back when they are not running so unless there was another means of preventing backflow all the water would drain out when you turned them off.
In order to have a reversible pump that would hold the water in while the pump was off you would need to have a "Flexible impeller" pump. Such a pump looks something like this: http://www.jabsco.com/prodInfoApp/servlet/DisplayItemDetail?itemId=23680-4003&catalogId=Marine&categoryId=JMGEN&typeId=JMBP S
The rubber impeller in these style of pumps do wear out, especially if operated dry. Note that dry includes continuing to empty once the tank/bag has gone dry! There is usually a plate at the end of the pump that is easily removed to give access to the impeller. Simply reach in and pull the old impeller out and then slide the new impeller in (giving it a twist as you insert it to fold the blades).
If you know the make and model of the pump them you can order replacement imellers quite easily. If you don't know the make and model and the old impeller is still intact enough to count the number of blades, the diameter, height and shaft size then you can order it up based on that alone or simply match it up at the parts counter.
As for the electrical problem: You say you can hear the solenoids clicking: that mean that there is control voltage getting from the switch to the small terminal on the solenoid. That doesn't mean that the main power to the solenoid is intact. A flexible impeller pump requires a fair amount of current, in the rage of 15 to 20 amps. There should be a separate fuse/circuit breaker for this line, which is indepenant of the control voltage.