Whitney Loop: Bog Stream question

Just returned from a lovely 4 night trip, completing the entire Whitney Loop for the first time. We had done the Little Tupper to Low's Lake horseshoe several times, and the lower Bog River from Low's Lower Dam to the Bog Stream (aka Round Lake Outlet) confluence once several years ago. It was nice to see that all the carries from Little Tupper to Low's are now marked, and that the notoriously muddy take-out for the Rock Pond-Hardigan Pond carry has been moved to drier ground (making the carry a little longer but a lot nicer). With a sense of adventure and a high tolerance for beaver dams (lots and lots of them), we were able to nose our canoe down the Hardigan Pond outlet into Salmon Lake outlet and avoid that carry. Compared to several years ago, the carries along the lower Bog are better marked (with a colorful assortment of surveyor's tape, plastic container lids nailed to trees, and even some hand-drawn canoe carry signs) and better trodden. We had previously hiked from Round Lake down along the Bog Stream to Don't Tell Falls (where there is a zip line), so knew what to expect of that carry and where to find it. The only unexplored leg of the trip for us was from the Bog River-Bog Stream confluence to Don't Tell Falls. Of course, that's where we got more than we bargained for....When we hit the long rock garden below the Bridge Rapids, we looked for a take-out described in the Cilley guidebook as a "faint fisherman's path". We failed to find it. We tried bushwhacking on river right (where said path was supposed to be) but the undergrowth was too dense. The river was too shallow and rocky to drag a laden canoe up (at least, not our nice cedarstripper), so we ended up wading laboriously and treacherously, wearing full backpacks and lifting the canoe over rock after rock, making painstaking progress until we finally spied a sturdy, new-looking footbridge over a side stream. We quickly beat our way up to that, found a well-established path paralleling the river, and got to the bridge (where the old logging road from Pa's Falls comes in) in no time. We were too exhausted and it was to late in the day to explore the path in the downstream direction to figure out where we had gone wrong and how we had failed to find it. My question: is anyone out there familiar with this carry? Is it possible to get from the river to the trail we eventually found much further downstream (like before the rock garden starts....)? Between the Bridge Rapids and the Don't Tell Falls take-out, the river was very pretty, mostly paddle-able, with a few easy shallow riffles to wade through. The carry from Don't Tell Falls to Round Lake was hard work in that it's long and uphill, but the trail is mostly good and easy to follow (and passes by some beautiful cascades).