A manual bilge is one of those things that you hope you never have to use but if you do have cause to use it you really really want it to work.
Greg...
An owner can look at the problem and consider it was there when I got the boat. The people before me were all masters at their trade and only selected the very best solutions for the boat.
In my way of thinking the bold print above is the important message you want to take back to your boat. Sure you can use lesser hose that kinks, then you can add a support to help it not kink patching up the problem. Then you can pray when the SH** and the FAN are colliding that the hose does not collapse as you pump to save your boat.
Or you can invest a little cash and buy the proper sized reinforced bilge hose that will preform without kinking or collapsing when needed.
It is your boat and your decision.
I wish you all the best.