GUMPY

I ran mine with one of these: Step Up Converter,KUNCAN 5V to 12V 1A USB Step Up Voltage Transformer DC Power Cable with Barrel Jack Booster Module https://amzn.eu/d/ffrCr6c Needs a 2 amp usb socket to run it.

Don't forget the fuel tank needs pressure testing and having a hatch that will need a good seal is going to make this more difficult.

Never had an inspection hatch on any of my boats but have always had a decent drain at the lowest point of the tanks. Never had much water in the tanks either. Maybe pint or so in 30 years.

Especially if it goes on SSA at any point 😲

It will go the same way as Titchmarsh, back to manual wind 😲

The CNC machine at work cut it fine using a router type thing not sure what speed it ran at.

HDPE can be cut with a saw and drilled much like wood can just take it easy. I used a jigsaw to cut my fender hangers. Never had a problem with it melting. My hangers were two pieces bolted together as I only had 10mm thick HDPE. A deburring tool is essential to get rid of the sharp edges.

I'm afraid most of it came as scrap off cuts from my last work place. I did get some from on eBay for other projects. A very useful plastic 🤔

HDPE is great stuff, hard enough to have strength but soft enough not to damage the paint provided all edges and corners are rounded off with a deburring tool.

If I had to it would be a bowline. However mine were attached in the same way a tent guy rope is, easily adjustable.

His barge designs are excellent 😎

The joys of SSA I do miss the river but not the SSA 😲 I see @blackrose is going nowhere on his boat for a while 😉

Found a pic from the sales details that just shows the hole there are two on each rubber. Blue arrow points to hole

The original rubber would have a couple of slots in the top to allow water to pass down below and out of the drains. I don't have the boat anymore so can't do a picture😲