Is there a kit or process that would to jump start a Boat that uses two 12 volt deep cycle Marine Batteries?

Tool review: Jump-N-Carry jump starter -- Portable model ...

www.autoserviceprofessional.com/.../tool-review-jump-n-carry-jump-sta...

Jun 6, 2014 - The Jump-N-Carry's convenient charge indicator reveals the unit's stored voltage. ... By plugging the male/male adapter cable into the Jump-N-Carry ... This 12-volt DC port also can be used to power 12V accessories (up to 12 ...

Using The Unit As A 12 Volt Dc Portable Power Supply ...

If it is a 12 volt Size U1 - yes. (UB12350, GPC1234, GPL-U1, NP33-12B)
The amp hour rating is dependent on use and manufacturer of the battery. It is the size and voltage that matters. AGM batteries generally have a slightly lower AH rating but recover better from deep deep discharging cycles. (Available at marine stores)
The amp-hour rating affects how long the chair will travel between chargings.

36 lbs is 12 volt any deep cycle battery will work

First thing to do is to check out the red and black wires with a volt meter. If there is no reading then you know that the two wires are not on the same circuit. The black wire may be also carrying 12 volts positive. If those wires check out okay the next thing to check is the battery itself. I recently experienced a similar problem with arcing from what I believed to be a good circuit. It turned out that one of my marine batteries had an internal short circuit. I ditched it and got a new battery and all is good now.

to increase amps your best bet is to get two deep cycle marine batteries with high cranking amps

Yes, just be sure connections are heavy enough wire, and obviously the inverter uses 12 vdc input. Hook jumper wires positive to positive, negative to negative, on all 12 volt batteries. Deep cycle batteries will work better than car batteries. Just remember, when re-charging them, that they last longer when charged slowly, so don't use a high amp setting on charger and to monitor them closely, and do it in a well ventilated area, away from any ignition sources.

From your discription it's a 6 volt

Installing a generator into a boat is critical to be done correctly. You need to contact the manufacturer of your generator for approval, and wiring diagrams. If done incorrectly (which if you are connecting 12v from gen), you may create eddy fields that can cause galvanic corrosion, not to mention electrical shock hazards.

If your generator isn't marine rated, then don't install it into a boat.

Portable generators can be used, but don't hardwire those into a boat. Just use extension cords to the appliances you want to power.

Cut the battery wires where they hook up to the machine. When cut they might need some more wire spliced to them. Get some alligator clips to put on your red and black wires to hook right to your boat battery. When not in use on the boat get a small 12 volt battery, cheaper then two 6 volt disposables.

I use Red Hot Mama batteries. These have held up for longer than any other brands that I have used. These are deep cycle marine wet ones.