I also second the lattice on top of your fence. They can still see through it but can't jump.

If you go the invisible fence route just remember it's the SOUND that deters them. The shock is the consequence to not obeying a "back" command that you teach when they hear the sound. On a good system the time between the sound and the shock can be adjusted but you actually train them with the collar in your hands so they hear the sound. We used it on a border collie and elkhound and had great results.

Love the bike lane!