RE: Big lag bolts instead of screw in steps??
When I hunt private land I use a bolt setup made by 'EZ Kut'...got it at an expo for a great price. These are great for times you KNOW your tree, such as the early season. However, as the season matures and hunting gets hard I tend to switch trees every now and then so I switch over to tree steps b/c you can set them up, and move them around much easier than redrilling a tree every 2 weeks or so.
But with these bolts...let's not talk about when the snow/rain comes to town.