Good fastening points are kind of dependent upon your specific tractor. On the smaller machines, including the B7100, it can be very difficult to get straps or chains around the axle housing, which is normally an excellent spot to use. An excellent alternative for you would be a
wheel basket tie down, which wraps the tire and, once set up, are extremely fast to use.
Other good places to fasten are the drawbar or, if your machine has them, the rear loader mount brackets. Depending on what type of attachment point you have, chains or straps may be more or less appropriate/user friendly. The front weight bracket or axle is good for the forward end. I have seen some photographs, I think here, of someone who bolted dedicated D-rings to a bracket up front to use in securing his tractor. I though that was a superb idea.
The types of tie downs used seems to engender a lot of controversy, and may be subject to local legal requirements. I use both chains and straps, and sometimes use come-along type devices for secondary or tertiary load securing. Both chains and ratchet straps have advantages and drawbacks. Chains are secure, resistant to abrasion or sharp corners, and don't jam or weaken in the sun. Straps are light, fast, strong, and have a tiny bit of "give" in them that helps keep them secure.
I try to minimize the number of junctions in tie downs whenever possible. So, given a choice of wrapping a chain and fastening a ratchet to that, or using the ratchet directly, I fasten directly, assuming there aren't other mitigating factors. That is one reason I don't automatically advocate for chains with binders, because there are more points to come loose. (Sometimes chains with binders are the best choice, though: There are few absolutes, in my view.)
On a Ford I have, the best tie off point for the front is the loader bracket, and I need to wrap something around it. For this, chain is a better choice, since it doesn't slice easily as does webbing. Chains are slow adapt, though, and heavy to work with. I like ratchet straps because they are light, extremely strong, and fast. On the rear, I use axle wrapping type tie downs similar to
this on each side. They wrap, snap, pull to the D-ring on the trailer, and ratchet snugly.
Chains with ratchet binders are slower. Lever-type breakover binders are fast, if one is skilled and experienced at "eye-balling" the placement, but they are dependent on getting VERY tight to stay locked, and I don't use my 3/8" lever binders on small equipment because they can bend things if I pull them tight enough to stay closed securely. Sometimes with a lever binder the choice is "breaker bar tight" or kind of floppy, and I don't like that.
My preference (and this is only personally, not because I think it is superior or better for anyone but me) is to use chains without binders in the front, and straps in the rear. I pull up a little farther than I want the load to be on the trailer, and attach the chains. I put the ratchet straps on the back, and then tighten one side. (With that said, depending on what implement is on back, I sometimes do this procedure but with chains and binders. With the disk, I cannot avoid running my tie down between the disk blades, and sometimes a strap would touch the blade. A chain with a pad between the blade and chain isn't going to run any risk of being sliced. A strap would.)
The tractor goes into neutral, then I use the other side to roll the machine back so the chains are taut. If necessary, I re-set the first ratchet strap, and tension everything appropriately. The tractor goes into gear, parking brake gets set, etc. Then, usually, I put a strap or cable across the loader (if applicable) and whatever implement is on back. I finish by making a couple hard starts and stops in the driveway or street, and bumping across the driveway lip.
Hazards on, I walk around and check all the tie downs, verify my lights work, and make sure nothing bounced off the trailer (linch pins, work gloves, etc) and then, just for thoroughness' sake, I put either a bungee cord or a motorcycle type tie-down around the pair of straps and the pair of chains. These serve as an additional layer of security, keeping things where they are supposed to be, and if attached to certain spots on the load or trailer, are visible in the mirrors in case something does fall off. As well, they force me to check once more that things are securely attached in the correct place, and that nothing has shifted.
It really doesn't take that long, perhaps 5-7 minutes, to tie things down once a system is established and you know what you're going to do. I spent several hours one afternoon getting things to that point though, including placing rings on the trailer, sizing ratchet straps and attachment points, and so forth. It takes me quite a bit longer the first time with each machine to figure out how and where to tie things.