Riding solo in the seat? I used to carry alot of stuff with me on my V500 before I put my saddle bags on there. It didn’t even have a sissy bar. I used the “net” styled bungee set up. There are ones out there if you look that have adjustable hooks where you can relocate them on the net itself to adjust the tension. The first couple times I rode with it I was paranoid it was going to just let go. But the sucker kept everything safe. Anything of real weight I would lay flat behind you in the passengers spot and strap it down well…. then build up behind that and use the back rest to keep it from shifting further.