Wow, thanks for the compliments however I can’t take all the credit for this style of spinning. On my supported spindles I do a semi-continuous style of spinning known as Fleegle; named after a spinner who goes by the name and has several videos that all just drafting & spinning on support spindles semi-continuously. I too started using drop spindles & I actually stumbled across fleegle spinning because I was having a hard time teaching myself long or short draw on a support spindle. I enjoy the semi-continuous method because it allows you to keep up a good rhythm for a long time without having to stop as frequently to wind on the cop from the temporary cop. Here’s a link for one of the videos; https://youtu.be/8VypPdls_ds?si=NFGF9SUtvBVHqShv
As for what fibre to use, I honestly don’t know why combed top has such a bad rep. I have only ever used combed top in various fibres/blends and had no problem. The two main things that prevents a fibre from drafting smoothly are holding your fibre too tightly in your non-drafting hand & trying to draft too soon for the staple (ie the end of the staple is still held in your fibre source in your drafting hand but you are also trying to pull the other end out of your drafting triangle). My tips for this are to familiarise yourself with the fibre you are trying to use, work out its staple – a long staple might need to be drafted at longer intervals compared to a shorter staple. Also, pre-drafting can help A LOT; I always pre-draft the hank I’m about to work which helps the fibre draft out like butter, very important for sticky fibres like mulberry silks or clumpy ones like sari silk.
One last thing to remember is that the support spindle will feel super clunky until you get used to it, but don’t be discouraged because the more you use it the faster your body will adapt & you’ll find how spinning support works for you! I think it took me about a month before I really felt comfortable with my supports.