Depending on the water level of the lake, you may find a couple of inches of water below some problems. Even if the water level is low, there are often puddles around some of the boulders. A tarp can come in handy in keeping your crash pad dry if you care about such things.
Halfway Log Dump is part of Bruce Peninsula National Park and climbers are represented by the Ontario Access Coalition. There is a parking fee of $11.70 per vehicle that can be paid at the self-registration station at the parking lot.
There is a history of access issues here, and bouldering was not permitted at all for many years due to environmental impact concerns. Bouldering is permitted only on a section of boulders directly on the shore of the lake. Please do not venture into the forest in search of problems. The highest priority of Parks Canada is to preserve the natural resources of the park, so please strive to leave no trace.