Absolutely on the cycle analyst.
The only problem is that it's $150!

If your controller can be configured for a max amperage setting, that's alot easier and cheaper than the CA.

My currie (24v) motor has been running on 36v (actually 39.6 avg) for over 3 years. My controller only allows a max amperage of 25a which is at most 900w or so.
Now mind you that is max wattage and not continuous.
On avg my continuous is 37v and 12a which is about 450w continuous which is what my motor is rated at anyways. (450w motor)