[Macbow]

I shot a nice Bickerstaffe longbow at the weekend and the same methods for shooting my AFBs apply. My advice Alan is concentrate on form and don't put too much emphasis on aiming. If your form is good you will have a consistent shot process and get decent groups - the aiming bit is just a case of adjusting elevation and windage to put those groups where you want them. There's a great book called Instinctive Archery Insights by Dr Jay Kidwell that I'd recommend with regards to aiming.
Personally when I aim I have both eyes open. I am aware of the shaft but without actually looking down at the shaft I line it up with the target while at the same time placing the tip of the arrow above, below or on the spot I intend to hit. It sounds slow but it's all calculated in a second. It's an "instinctive" gap system with the focus on the target and not on the tip of the arrow. Once the gap is roughly set I try not to think anymore about aiming. I look at the spot while mentally (and slightly physically) pushing my bow arm towards the target while relaxing my draw hand. If I actually think about letting go of the string I nearly always get a poor release. I use a deep hook but some very good archers happily shoot off the fingers. The advantage of a good deep hook is being able to use back tension to hold at anchor while keeping the hand relaxed. Once the arrow is released keep holding the bow arm solid until you hear the arrow hit. I am seldom aware of the string's alignment with the riser although it does make a difference as my groups impact differently depending on whether I use a tab or glove.
Concentrating too much on the aiming process gives me target panic - good form more than anything will help your accuracy.
You know your own shooting best but to me 60 lbs is quite a hefty draw weight for learning and maintaining good form although you'd probably get a nice crisp release. I shoot a 50lb flatbow but i have a 35 pounder for practising form.