Yeah, well open you just power thru if noone around.
If there are other's then I admit its not fun.
I would never go thru the open North path in anything smaller than 30' or a single screw.
That is gauranteed mess.
As for the hand-wall holders, I have seen them.
Went thru with my friend with skyhook and we were 1 of 2 boats.
He engaged skyhook and we sat in middle of canal.
No holding on!
Next boat gets skyhook or DPS!