Another Hobby Engine crawler crane.

[OldVet]

Hello ,new here.
I`m new to this hobby so bought a lower level model I guess some would say.
It`s Hobby Engines crawler crane, the standard model.
It seems to work fine so far but is limited as to what it can dig with the clam, two light so I added some lead to it which helped some.
I`m into steam boats so built a barge for it with plans of dredging sand from the bottom of my home made pond but it wouldn`t scoop that.
I think golf balls painted black or brown would work great for under water dredging but I haven`t gotten any yet.
Saw dust works good and I have lots of that from my sawmill and I made a log boom and picked sticks from the pond that worked well.
Here`s a couple video`s.

Also, I tried to find Hobby Engines website but it wouldn`t work are they still in business?
Are there any places to get factory replacement parts for this crane.
Thanks.

https://www.youtube.com/watch?v=yjFZjH0qfx0

https://www.youtube.com/watch?v=LOvGwTZ0dY8