Problems to note:

If you are completely turtle then water getting in these units is a big concern, as it means the unit is phucked then.

Also the prostart doesn't have a bit to tie a rope/lanyard onto as a safetly line, depends on the velcro to hold it. Expensive to lose. Also at the moth worlds guys were having issues with water getting in the battery section. Best to use some vaseline on the seal to ensure water doesn't creep in.